1531505780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{907}}^1\times {\mathrm{1723}}^1$

素因数の和:2653

約数の個数: 72

約数和(自身を含む): 3747548448

約数和(自身を除く): 2216042668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 907, 980, 1723, 1814, 3446, 3628, 4535, 6349, 6892, 8615, 9070, 12061, 12698, 17230, 18140, 24122, 25396, 31745, 34460, 44443, 48244, 60305, 63490, 84427, 88886, 120610, 126980, 168854, 177772, 222215, 241220, 337708, 422135, 444430, 844270, 888860, 1562761, 1688540, 3125522, 6251044, 7813805, 10939327, 15627610, 21878654, 31255220, 43757308, 54696635, 76575289, 109393270, 153150578, 218786540, 306301156, 382876445, 765752890, 1531505780]

約数ペア:

[(1, 1531505780), (2, 765752890), (4, 382876445), (5, 306301156), (7, 218786540), (10, 153150578), (14, 109393270), (20, 76575289), (28, 54696635), (35, 43757308), (49, 31255220), (70, 21878654), (98, 15627610), (140, 10939327), (196, 7813805), (245, 6251044), (490, 3125522), (907, 1688540), (980, 1562761), (1723, 888860), (1814, 844270), (3446, 444430), (3628, 422135), (4535, 337708), (6349, 241220), (6892, 222215), (8615, 177772), (9070, 168854), (12061, 126980), (12698, 120610), (17230, 88886), (18140, 84427), (24122, 63490), (25396, 60305), (31745, 48244), (34460, 44443)]