20409660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1597}}^1$

素因数の和:1683

約数の個数: 72

約数和(自身を含む): 62820576

約数和(自身を除く): 42410916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1597, 2130, 2556, 3194, 3195, 4260, 4791, 6388, 6390, 7985, 9582, 12780, 14373, 15970, 19164, 23955, 28746, 31940, 47910, 57492, 71865, 95820, 113387, 143730, 226774, 287460, 340161, 453548, 566935, 680322, 1020483, 1133870, 1360644, 1700805, 2040966, 2267740, 3401610, 4081932, 5102415, 6803220, 10204830, 20409660]

約数ペア:

[(1, 20409660), (2, 10204830), (3, 6803220), (4, 5102415), (5, 4081932), (6, 3401610), (9, 2267740), (10, 2040966), (12, 1700805), (15, 1360644), (18, 1133870), (20, 1020483), (30, 680322), (36, 566935), (45, 453548), (60, 340161), (71, 287460), (90, 226774), (142, 143730), (180, 113387), (213, 95820), (284, 71865), (355, 57492), (426, 47910), (639, 31940), (710, 28746), (852, 23955), (1065, 19164), (1278, 15970), (1420, 14373), (1597, 12780), (2130, 9582), (2556, 7985), (3194, 6390), (3195, 6388), (4260, 4791)]