81370380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2129}}^1$

素因数の和:2168

約数の個数: 144

約数和(自身を含む): 285556320

約数和(自身を除く): 204185940

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 780, 910, 980, 1092, 1274, 1365, 1470, 1820, 1911, 2129, 2548, 2730, 2940, 3185, 3822, 4258, 5460, 6370, 6387, 7644, 8516, 9555, 10645, 12740, 12774, 14903, 19110, 21290, 25548, 27677, 29806, 31935, 38220, 42580, 44709, 55354, 59612, 63870, 74515, 83031, 89418, 104321, 110708, 127740, 138385, 149030, 166062, 178836, 193739, 208642, 223545, 276770, 298060, 312963, 332124, 387478, 415155, 417284, 447090, 521605, 553540, 581217, 625926, 774956, 830310, 894180, 968695, 1043210, 1162434, 1251852, 1356173, 1564815, 1660620, 1937390, 2086420, 2324868, 2712346, 2906085, 3129630, 3874780, 4068519, 5424692, 5812170, 6259260, 6780865, 8137038, 11624340, 13561730, 16274076, 20342595, 27123460, 40685190, 81370380]

約数ペア:

[(1, 81370380), (2, 40685190), (3, 27123460), (4, 20342595), (5, 16274076), (6, 13561730), (7, 11624340), (10, 8137038), (12, 6780865), (13, 6259260), (14, 5812170), (15, 5424692), (20, 4068519), (21, 3874780), (26, 3129630), (28, 2906085), (30, 2712346), (35, 2324868), (39, 2086420), (42, 1937390), (49, 1660620), (52, 1564815), (60, 1356173), (65, 1251852), (70, 1162434), (78, 1043210), (84, 968695), (91, 894180), (98, 830310), (105, 774956), (130, 625926), (140, 581217), (147, 553540), (156, 521605), (182, 447090), (195, 417284), (196, 415155), (210, 387478), (245, 332124), (260, 312963), (273, 298060), (294, 276770), (364, 223545), (390, 208642), (420, 193739), (455, 178836), (490, 166062), (546, 149030), (588, 138385), (637, 127740), (735, 110708), (780, 104321), (910, 89418), (980, 83031), (1092, 74515), (1274, 63870), (1365, 59612), (1470, 55354), (1820, 44709), (1911, 42580), (2129, 38220), (2548, 31935), (2730, 29806), (2940, 27677), (3185, 25548), (3822, 21290), (4258, 19110), (5460, 14903), (6370, 12774), (6387, 12740), (7644, 10645), (8516, 9555)]