66688640

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1319}}^1$

素因数の和:1417

約数の個数: 64

約数和(自身を含む): 161568000

約数和(自身を除く): 94879360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 632, 640, 790, 1264, 1319, 1580, 2528, 2638, 3160, 5056, 5276, 6320, 6595, 10112, 10552, 12640, 13190, 21104, 25280, 26380, 42208, 50560, 52760, 84416, 104201, 105520, 168832, 208402, 211040, 416804, 422080, 521005, 833608, 844160, 1042010, 1667216, 2084020, 3334432, 4168040, 6668864, 8336080, 13337728, 16672160, 33344320, 66688640]

約数ペア:

[(1, 66688640), (2, 33344320), (4, 16672160), (5, 13337728), (8, 8336080), (10, 6668864), (16, 4168040), (20, 3334432), (32, 2084020), (40, 1667216), (64, 1042010), (79, 844160), (80, 833608), (128, 521005), (158, 422080), (160, 416804), (316, 211040), (320, 208402), (395, 168832), (632, 105520), (640, 104201), (790, 84416), (1264, 52760), (1319, 50560), (1580, 42208), (2528, 26380), (2638, 25280), (3160, 21104), (5056, 13190), (5276, 12640), (6320, 10552), (6595, 10112)]