20199521680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1022243}}^1$

素因数の和:1022288

約数の個数: 80

約数和(自身を含む): 53238467520

約数和(自身を除く): 33038945840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4940, 9880, 19760, 1022243, 2044486, 4088972, 5111215, 8177944, 10222430, 13289159, 16355888, 19422617, 20444860, 26578318, 38845234, 40889720, 53156636, 66445795, 77690468, 81779440, 97113085, 106313272, 132891590, 155380936, 194226170, 212626544, 252494021, 265783180, 310761872, 388452340, 504988042, 531566360, 776904680, 1009976084, 1063132720, 1262470105, 1553809360, 2019952168, 2524940210, 4039904336, 5049880420, 10099760840, 20199521680]

約数ペア:

[(1, 20199521680), (2, 10099760840), (4, 5049880420), (5, 4039904336), (8, 2524940210), (10, 2019952168), (13, 1553809360), (16, 1262470105), (19, 1063132720), (20, 1009976084), (26, 776904680), (38, 531566360), (40, 504988042), (52, 388452340), (65, 310761872), (76, 265783180), (80, 252494021), (95, 212626544), (104, 194226170), (130, 155380936), (152, 132891590), (190, 106313272), (208, 97113085), (247, 81779440), (260, 77690468), (304, 66445795), (380, 53156636), (494, 40889720), (520, 38845234), (760, 26578318), (988, 20444860), (1040, 19422617), (1235, 16355888), (1520, 13289159), (1976, 10222430), (2470, 8177944), (3952, 5111215), (4940, 4088972), (9880, 2044486), (19760, 1022243)]