1388496720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{445031}}^1$

素因数の和:445060

約数の個数: 80

約数和(自身を含む): 4635453312

約数和(自身を除く): 3246956592

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 445031, 890062, 1335093, 1780124, 2225155, 2670186, 3560248, 4450310, 5340372, 5785403, 6675465, 7120496, 8900620, 10680744, 11570806, 13350930, 17356209, 17801240, 21361488, 23141612, 26701860, 28927015, 34712418, 35602480, 46283224, 53403720, 57854030, 69424836, 86781045, 92566448, 106807440, 115708060, 138849672, 173562090, 231416120, 277699344, 347124180, 462832240, 694248360, 1388496720]

約数ペア:

[(1, 1388496720), (2, 694248360), (3, 462832240), (4, 347124180), (5, 277699344), (6, 231416120), (8, 173562090), (10, 138849672), (12, 115708060), (13, 106807440), (15, 92566448), (16, 86781045), (20, 69424836), (24, 57854030), (26, 53403720), (30, 46283224), (39, 35602480), (40, 34712418), (48, 28927015), (52, 26701860), (60, 23141612), (65, 21361488), (78, 17801240), (80, 17356209), (104, 13350930), (120, 11570806), (130, 10680744), (156, 8900620), (195, 7120496), (208, 6675465), (240, 5785403), (260, 5340372), (312, 4450310), (390, 3560248), (520, 2670186), (624, 2225155), (780, 1780124), (1040, 1335093), (1560, 890062), (3120, 445031)]