31656560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:586

約数の個数: 80

約数和(自身を含む): 80724000

約数和(自身を除く): 49067440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 488, 499, 520, 610, 793, 976, 998, 1040, 1220, 1586, 1996, 2440, 2495, 3172, 3965, 3992, 4880, 4990, 6344, 6487, 7930, 7984, 9980, 12688, 12974, 15860, 19960, 25948, 30439, 31720, 32435, 39920, 51896, 60878, 63440, 64870, 103792, 121756, 129740, 152195, 243512, 259480, 304390, 395707, 487024, 518960, 608780, 791414, 1217560, 1582828, 1978535, 2435120, 3165656, 3957070, 6331312, 7914140, 15828280, 31656560]

約数ペア:

[(1, 31656560), (2, 15828280), (4, 7914140), (5, 6331312), (8, 3957070), (10, 3165656), (13, 2435120), (16, 1978535), (20, 1582828), (26, 1217560), (40, 791414), (52, 608780), (61, 518960), (65, 487024), (80, 395707), (104, 304390), (122, 259480), (130, 243512), (208, 152195), (244, 129740), (260, 121756), (305, 103792), (488, 64870), (499, 63440), (520, 60878), (610, 51896), (793, 39920), (976, 32435), (998, 31720), (1040, 30439), (1220, 25948), (1586, 19960), (1996, 15860), (2440, 12974), (2495, 12688), (3172, 9980), (3965, 7984), (3992, 7930), (4880, 6487), (4990, 6344)]