399609840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{7673}}^1$

素因数の和:7727

約数の個数: 160

約数和(自身を含む): 1461620736

約数和(自身を除く): 1062010896

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 105, 112, 120, 124, 140, 155, 168, 186, 210, 217, 240, 248, 280, 310, 336, 372, 420, 434, 465, 496, 560, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1488, 1680, 1736, 1860, 2170, 2480, 2604, 3255, 3472, 3720, 4340, 5208, 6510, 7440, 7673, 8680, 10416, 13020, 15346, 17360, 23019, 26040, 30692, 38365, 46038, 52080, 53711, 61384, 76730, 92076, 107422, 115095, 122768, 153460, 161133, 184152, 214844, 230190, 237863, 268555, 306920, 322266, 368304, 429688, 460380, 475726, 537110, 613840, 644532, 713589, 805665, 859376, 920760, 951452, 1074220, 1189315, 1289064, 1427178, 1611330, 1665041, 1841520, 1902904, 2148440, 2378630, 2578128, 2854356, 3222660, 3330082, 3567945, 3805808, 4296880, 4757260, 4995123, 5708712, 6445320, 6660164, 7135890, 8325205, 9514520, 9990246, 11417424, 12890640, 13320328, 14271780, 16650410, 19029040, 19980492, 24975615, 26640656, 28543560, 33300820, 39960984, 49951230, 57087120, 66601640, 79921968, 99902460, 133203280, 199804920, 399609840]

約数ペア:

[(1, 399609840), (2, 199804920), (3, 133203280), (4, 99902460), (5, 79921968), (6, 66601640), (7, 57087120), (8, 49951230), (10, 39960984), (12, 33300820), (14, 28543560), (15, 26640656), (16, 24975615), (20, 19980492), (21, 19029040), (24, 16650410), (28, 14271780), (30, 13320328), (31, 12890640), (35, 11417424), (40, 9990246), (42, 9514520), (48, 8325205), (56, 7135890), (60, 6660164), (62, 6445320), (70, 5708712), (80, 4995123), (84, 4757260), (93, 4296880), (105, 3805808), (112, 3567945), (120, 3330082), (124, 3222660), (140, 2854356), (155, 2578128), (168, 2378630), (186, 2148440), (210, 1902904), (217, 1841520), (240, 1665041), (248, 1611330), (280, 1427178), (310, 1289064), (336, 1189315), (372, 1074220), (420, 951452), (434, 920760), (465, 859376), (496, 805665), (560, 713589), (620, 644532), (651, 613840), (744, 537110), (840, 475726), (868, 460380), (930, 429688), (1085, 368304), (1240, 322266), (1302, 306920), (1488, 268555), (1680, 237863), (1736, 230190), (1860, 214844), (2170, 184152), (2480, 161133), (2604, 153460), (3255, 122768), (3472, 115095), (3720, 107422), (4340, 92076), (5208, 76730), (6510, 61384), (7440, 53711), (7673, 52080), (8680, 46038), (10416, 38365), (13020, 30692), (15346, 26040), (17360, 23019)]