56391790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2057

約数の個数: 64

約数和(自身を含む): 129024000

約数和(自身を除く): 72632210

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 806, 910, 1085, 1999, 2015, 2170, 2821, 3998, 4030, 5642, 9995, 13993, 14105, 19990, 25987, 27986, 28210, 51974, 61969, 69965, 123938, 129935, 139930, 181909, 259870, 309845, 363818, 433783, 619690, 805597, 867566, 909545, 1611194, 1819090, 2168915, 4027985, 4337830, 5639179, 8055970, 11278358, 28195895, 56391790]

約数ペア:

[(1, 56391790), (2, 28195895), (5, 11278358), (7, 8055970), (10, 5639179), (13, 4337830), (14, 4027985), (26, 2168915), (31, 1819090), (35, 1611194), (62, 909545), (65, 867566), (70, 805597), (91, 619690), (130, 433783), (155, 363818), (182, 309845), (217, 259870), (310, 181909), (403, 139930), (434, 129935), (455, 123938), (806, 69965), (910, 61969), (1085, 51974), (1999, 28210), (2015, 27986), (2170, 25987), (2821, 19990), (3998, 14105), (4030, 13993), (5642, 9995)]