1280695920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{762319}}^1$

素因数の和:762342

約数の個数: 80

約数和(自身を含む): 4537328640

約数和(自身を除く): 3256632720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 762319, 1524638, 2286957, 3049276, 3811595, 4573914, 5336233, 6098552, 7623190, 9147828, 10672466, 11434785, 12197104, 15246380, 16008699, 18295656, 21344932, 22869570, 26681165, 30492760, 32017398, 36591312, 42689864, 45739140, 53362330, 60985520, 64034796, 80043495, 85379728, 91478280, 106724660, 128069592, 160086990, 182956560, 213449320, 256139184, 320173980, 426898640, 640347960, 1280695920]

約数ペア:

[(1, 1280695920), (2, 640347960), (3, 426898640), (4, 320173980), (5, 256139184), (6, 213449320), (7, 182956560), (8, 160086990), (10, 128069592), (12, 106724660), (14, 91478280), (15, 85379728), (16, 80043495), (20, 64034796), (21, 60985520), (24, 53362330), (28, 45739140), (30, 42689864), (35, 36591312), (40, 32017398), (42, 30492760), (48, 26681165), (56, 22869570), (60, 21344932), (70, 18295656), (80, 16008699), (84, 15246380), (105, 12197104), (112, 11434785), (120, 10672466), (140, 9147828), (168, 7623190), (210, 6098552), (240, 5336233), (280, 4573914), (336, 3811595), (420, 3049276), (560, 2286957), (840, 1524638), (1680, 762319)]