7451990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 17418240

約数和(自身を除く): 9966250

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 65, 70, 91, 95, 130, 133, 182, 190, 247, 266, 431, 455, 494, 665, 862, 910, 1235, 1330, 1729, 2155, 2470, 3017, 3458, 4310, 5603, 6034, 8189, 8645, 11206, 15085, 16378, 17290, 28015, 30170, 39221, 40945, 56030, 57323, 78442, 81890, 106457, 114646, 196105, 212914, 286615, 392210, 532285, 573230, 745199, 1064570, 1490398, 3725995, 7451990]

約数ペア:

[(1, 7451990), (2, 3725995), (5, 1490398), (7, 1064570), (10, 745199), (13, 573230), (14, 532285), (19, 392210), (26, 286615), (35, 212914), (38, 196105), (65, 114646), (70, 106457), (91, 81890), (95, 78442), (130, 57323), (133, 56030), (182, 40945), (190, 39221), (247, 30170), (266, 28015), (431, 17290), (455, 16378), (494, 15085), (665, 11206), (862, 8645), (910, 8189), (1235, 6034), (1330, 5603), (1729, 4310), (2155, 3458), (2470, 3017)]