20211520940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{177887}}^1$

素因数の和:177951

約数の個数: 96

約数和(自身を含む): 50207109120

約数和(自身を除く): 29995588180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 23, 26, 38, 46, 52, 65, 76, 92, 95, 115, 130, 190, 230, 247, 260, 299, 380, 437, 460, 494, 598, 874, 988, 1196, 1235, 1495, 1748, 2185, 2470, 2990, 4370, 4940, 5681, 5980, 8740, 11362, 22724, 28405, 56810, 113620, 177887, 355774, 711548, 889435, 1778870, 2312531, 3379853, 3557740, 4091401, 4625062, 6759706, 8182802, 9250124, 11562655, 13519412, 16365604, 16899265, 20457005, 23125310, 33798530, 40914010, 43938089, 46250620, 53188213, 67597060, 77736619, 81828020, 87876178, 106376426, 155473238, 175752356, 212752852, 219690445, 265941065, 310946476, 388683095, 439380890, 531882130, 777366190, 878761780, 1010576047, 1063764260, 1554732380, 2021152094, 4042304188, 5052880235, 10105760470, 20211520940]

約数ペア:

[(1, 20211520940), (2, 10105760470), (4, 5052880235), (5, 4042304188), (10, 2021152094), (13, 1554732380), (19, 1063764260), (20, 1010576047), (23, 878761780), (26, 777366190), (38, 531882130), (46, 439380890), (52, 388683095), (65, 310946476), (76, 265941065), (92, 219690445), (95, 212752852), (115, 175752356), (130, 155473238), (190, 106376426), (230, 87876178), (247, 81828020), (260, 77736619), (299, 67597060), (380, 53188213), (437, 46250620), (460, 43938089), (494, 40914010), (598, 33798530), (874, 23125310), (988, 20457005), (1196, 16899265), (1235, 16365604), (1495, 13519412), (1748, 11562655), (2185, 9250124), (2470, 8182802), (2990, 6759706), (4370, 4625062), (4940, 4091401), (5681, 3557740), (5980, 3379853), (8740, 2312531), (11362, 1778870), (22724, 889435), (28405, 711548), (56810, 355774), (113620, 177887)]