261948540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1571}}^1$

素因数の和:1987

約数の個数: 96

約数和(自身を含む): 840881664

約数和(自身を除く): 578933124

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 397, 420, 794, 1191, 1571, 1588, 1985, 2382, 2779, 3142, 3970, 4713, 4764, 5558, 5955, 6284, 7855, 7940, 8337, 9426, 10997, 11116, 11910, 13895, 15710, 16674, 18852, 21994, 23565, 23820, 27790, 31420, 32991, 33348, 41685, 43988, 47130, 54985, 55580, 65982, 83370, 94260, 109970, 131964, 164955, 166740, 219940, 329910, 623687, 659820, 1247374, 1871061, 2494748, 3118435, 3742122, 4365809, 6236870, 7484244, 8731618, 9355305, 12473740, 13097427, 17463236, 18710610, 21829045, 26194854, 37421220, 43658090, 52389708, 65487135, 87316180, 130974270, 261948540]

約数ペア:

[(1, 261948540), (2, 130974270), (3, 87316180), (4, 65487135), (5, 52389708), (6, 43658090), (7, 37421220), (10, 26194854), (12, 21829045), (14, 18710610), (15, 17463236), (20, 13097427), (21, 12473740), (28, 9355305), (30, 8731618), (35, 7484244), (42, 6236870), (60, 4365809), (70, 3742122), (84, 3118435), (105, 2494748), (140, 1871061), (210, 1247374), (397, 659820), (420, 623687), (794, 329910), (1191, 219940), (1571, 166740), (1588, 164955), (1985, 131964), (2382, 109970), (2779, 94260), (3142, 83370), (3970, 65982), (4713, 55580), (4764, 54985), (5558, 47130), (5955, 43988), (6284, 41685), (7855, 33348), (7940, 32991), (8337, 31420), (9426, 27790), (10997, 23820), (11116, 23565), (11910, 21994), (13895, 18852), (15710, 16674)]