20921784780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1289}}^1\times {\mathrm{20809}}^1$

素因数の和:22123

約数の個数: 96

約数和(自身を含む): 63139204800

約数和(自身を除く): 42217420020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 1289, 2578, 3867, 5156, 6445, 7734, 12890, 15468, 16757, 19335, 20809, 25780, 33514, 38670, 41618, 50271, 62427, 67028, 77340, 83236, 83785, 100542, 104045, 124854, 167570, 201084, 208090, 249708, 251355, 270517, 312135, 335140, 416180, 502710, 541034, 624270, 811551, 1005420, 1082068, 1248540, 1352585, 1623102, 2705170, 3246204, 4057755, 5410340, 8115510, 16231020, 26822801, 53645602, 80468403, 107291204, 134114005, 160936806, 268228010, 321873612, 348696413, 402342015, 536456020, 697392826, 804684030, 1046089239, 1394785652, 1609368060, 1743482065, 2092178478, 3486964130, 4184356956, 5230446195, 6973928260, 10460892390, 20921784780]

約数ペア:

[(1, 20921784780), (2, 10460892390), (3, 6973928260), (4, 5230446195), (5, 4184356956), (6, 3486964130), (10, 2092178478), (12, 1743482065), (13, 1609368060), (15, 1394785652), (20, 1046089239), (26, 804684030), (30, 697392826), (39, 536456020), (52, 402342015), (60, 348696413), (65, 321873612), (78, 268228010), (130, 160936806), (156, 134114005), (195, 107291204), (260, 80468403), (390, 53645602), (780, 26822801), (1289, 16231020), (2578, 8115510), (3867, 5410340), (5156, 4057755), (6445, 3246204), (7734, 2705170), (12890, 1623102), (15468, 1352585), (16757, 1248540), (19335, 1082068), (20809, 1005420), (25780, 811551), (33514, 624270), (38670, 541034), (41618, 502710), (50271, 416180), (62427, 335140), (67028, 312135), (77340, 270517), (83236, 251355), (83785, 249708), (100542, 208090), (104045, 201084), (124854, 167570)]