20818200520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{148829}}^1$

素因数の和:149122

約数の個数: 64

約数和(自身を含む): 50631966000

約数和(自身を除く): 29813765480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 269, 520, 538, 1076, 1345, 2152, 2690, 3497, 5380, 6994, 10760, 13988, 17485, 27976, 34970, 69940, 139880, 148829, 297658, 595316, 744145, 1190632, 1488290, 1934777, 2976580, 3869554, 5953160, 7739108, 9673885, 15478216, 19347770, 38695540, 40035001, 77391080, 80070002, 160140004, 200175005, 320280008, 400350010, 520455013, 800700020, 1040910026, 1601400040, 2081820052, 2602275065, 4163640104, 5204550130, 10409100260, 20818200520]

約数ペア:

[(1, 20818200520), (2, 10409100260), (4, 5204550130), (5, 4163640104), (8, 2602275065), (10, 2081820052), (13, 1601400040), (20, 1040910026), (26, 800700020), (40, 520455013), (52, 400350010), (65, 320280008), (104, 200175005), (130, 160140004), (260, 80070002), (269, 77391080), (520, 40035001), (538, 38695540), (1076, 19347770), (1345, 15478216), (2152, 9673885), (2690, 7739108), (3497, 5953160), (5380, 3869554), (6994, 2976580), (10760, 1934777), (13988, 1488290), (17485, 1190632), (27976, 744145), (34970, 595316), (69940, 297658), (139880, 148829)]