638709540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1787}}^1$

素因数の和:1866

約数の個数: 192

約数和(自身を含む): 2191601664

約数和(自身を除く): 1552892124

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 37, 42, 46, 60, 69, 70, 74, 84, 92, 105, 111, 115, 138, 140, 148, 161, 185, 210, 222, 230, 259, 276, 322, 345, 370, 420, 444, 460, 483, 518, 555, 644, 690, 740, 777, 805, 851, 966, 1036, 1110, 1295, 1380, 1554, 1610, 1702, 1787, 1932, 2220, 2415, 2553, 2590, 3108, 3220, 3404, 3574, 3885, 4255, 4830, 5106, 5180, 5361, 5957, 7148, 7770, 8510, 8935, 9660, 10212, 10722, 11914, 12509, 12765, 15540, 17020, 17870, 17871, 21444, 23828, 25018, 25530, 26805, 29785, 35740, 35742, 37527, 41101, 50036, 51060, 53610, 59570, 62545, 66119, 71484, 75054, 82202, 89355, 107220, 119140, 123303, 125090, 132238, 150108, 164404, 178710, 187635, 198357, 205505, 246606, 250180, 264476, 287707, 330595, 357420, 375270, 396714, 411010, 462833, 493212, 575414, 616515, 661190, 750540, 793428, 822020, 863121, 925666, 991785, 1150828, 1233030, 1322380, 1388499, 1438535, 1520737, 1726242, 1851332, 1983570, 2314165, 2466060, 2776998, 2877070, 3041474, 3452484, 3967140, 4315605, 4562211, 4628330, 5553996, 5754140, 6082948, 6942495, 7603685, 8631210, 9124422, 9256660, 10645159, 13884990, 15207370, 17262420, 18248844, 21290318, 22811055, 27769980, 30414740, 31935477, 42580636, 45622110, 53225795, 63870954, 91244220, 106451590, 127741908, 159677385, 212903180, 319354770, 638709540]

約数ペア:

[(1, 638709540), (2, 319354770), (3, 212903180), (4, 159677385), (5, 127741908), (6, 106451590), (7, 91244220), (10, 63870954), (12, 53225795), (14, 45622110), (15, 42580636), (20, 31935477), (21, 30414740), (23, 27769980), (28, 22811055), (30, 21290318), (35, 18248844), (37, 17262420), (42, 15207370), (46, 13884990), (60, 10645159), (69, 9256660), (70, 9124422), (74, 8631210), (84, 7603685), (92, 6942495), (105, 6082948), (111, 5754140), (115, 5553996), (138, 4628330), (140, 4562211), (148, 4315605), (161, 3967140), (185, 3452484), (210, 3041474), (222, 2877070), (230, 2776998), (259, 2466060), (276, 2314165), (322, 1983570), (345, 1851332), (370, 1726242), (420, 1520737), (444, 1438535), (460, 1388499), (483, 1322380), (518, 1233030), (555, 1150828), (644, 991785), (690, 925666), (740, 863121), (777, 822020), (805, 793428), (851, 750540), (966, 661190), (1036, 616515), (1110, 575414), (1295, 493212), (1380, 462833), (1554, 411010), (1610, 396714), (1702, 375270), (1787, 357420), (1932, 330595), (2220, 287707), (2415, 264476), (2553, 250180), (2590, 246606), (3108, 205505), (3220, 198357), (3404, 187635), (3574, 178710), (3885, 164404), (4255, 150108), (4830, 132238), (5106, 125090), (5180, 123303), (5361, 119140), (5957, 107220), (7148, 89355), (7770, 82202), (8510, 75054), (8935, 71484), (9660, 66119), (10212, 62545), (10722, 59570), (11914, 53610), (12509, 51060), (12765, 50036), (15540, 41101), (17020, 37527), (17870, 35742), (17871, 35740), (21444, 29785), (23828, 26805), (25018, 25530)]