315731640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{919}}^1$

素因数の和:1349

約数の個数: 128

約数和(自身を含む): 1086336000

約数和(自身を除く): 770604360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 409, 420, 818, 840, 919, 1227, 1636, 1838, 2045, 2454, 2757, 2863, 3272, 3676, 4090, 4595, 4908, 5514, 5726, 6135, 6433, 7352, 8180, 8589, 9190, 9816, 11028, 11452, 12270, 12866, 13785, 14315, 16360, 17178, 18380, 19299, 22056, 22904, 24540, 25732, 27570, 28630, 32165, 34356, 36760, 38598, 42945, 49080, 51464, 55140, 57260, 64330, 68712, 77196, 85890, 96495, 110280, 114520, 128660, 154392, 171780, 192990, 257320, 343560, 375871, 385980, 751742, 771960, 1127613, 1503484, 1879355, 2255226, 2631097, 3006968, 3758710, 4510452, 5262194, 5638065, 7517420, 7893291, 9020904, 10524388, 11276130, 13155485, 15034840, 15786582, 21048776, 22552260, 26310970, 31573164, 39466455, 45104520, 52621940, 63146328, 78932910, 105243880, 157865820, 315731640]

約数ペア:

[(1, 315731640), (2, 157865820), (3, 105243880), (4, 78932910), (5, 63146328), (6, 52621940), (7, 45104520), (8, 39466455), (10, 31573164), (12, 26310970), (14, 22552260), (15, 21048776), (20, 15786582), (21, 15034840), (24, 13155485), (28, 11276130), (30, 10524388), (35, 9020904), (40, 7893291), (42, 7517420), (56, 5638065), (60, 5262194), (70, 4510452), (84, 3758710), (105, 3006968), (120, 2631097), (140, 2255226), (168, 1879355), (210, 1503484), (280, 1127613), (409, 771960), (420, 751742), (818, 385980), (840, 375871), (919, 343560), (1227, 257320), (1636, 192990), (1838, 171780), (2045, 154392), (2454, 128660), (2757, 114520), (2863, 110280), (3272, 96495), (3676, 85890), (4090, 77196), (4595, 68712), (4908, 64330), (5514, 57260), (5726, 55140), (6135, 51464), (6433, 49080), (7352, 42945), (8180, 38598), (8589, 36760), (9190, 34356), (9816, 32165), (11028, 28630), (11452, 27570), (12270, 25732), (12866, 24540), (13785, 22904), (14315, 22056), (16360, 19299), (17178, 18380)]