991228440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{32141}}^1$

素因数の和:32412

約数の個数: 64

約数和(自身を含む): 2985348960

約数和(自身を除く): 1994120520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 257, 514, 771, 1028, 1285, 1542, 2056, 2570, 3084, 3855, 5140, 6168, 7710, 10280, 15420, 30840, 32141, 64282, 96423, 128564, 160705, 192846, 257128, 321410, 385692, 482115, 642820, 771384, 964230, 1285640, 1928460, 3856920, 8260237, 16520474, 24780711, 33040948, 41301185, 49561422, 66081896, 82602370, 99122844, 123903555, 165204740, 198245688, 247807110, 330409480, 495614220, 991228440]

約数ペア:

[(1, 991228440), (2, 495614220), (3, 330409480), (4, 247807110), (5, 198245688), (6, 165204740), (8, 123903555), (10, 99122844), (12, 82602370), (15, 66081896), (20, 49561422), (24, 41301185), (30, 33040948), (40, 24780711), (60, 16520474), (120, 8260237), (257, 3856920), (514, 1928460), (771, 1285640), (1028, 964230), (1285, 771384), (1542, 642820), (2056, 482115), (2570, 385692), (3084, 321410), (3855, 257128), (5140, 192846), (6168, 160705), (7710, 128564), (10280, 96423), (15420, 64282), (30840, 32141)]