20985456

素因数分解:

$2^4\times 3^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 56487456

約数和(自身を除く): 35502000

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 53, 73, 106, 113, 146, 159, 212, 219, 226, 292, 318, 339, 424, 438, 452, 584, 636, 678, 848, 876, 904, 1168, 1272, 1356, 1752, 1808, 2544, 2712, 3504, 3869, 5424, 5989, 7738, 8249, 11607, 11978, 15476, 16498, 17967, 23214, 23956, 24747, 30952, 32996, 35934, 46428, 47912, 49494, 61904, 65992, 71868, 92856, 95824, 98988, 131984, 143736, 185712, 197976, 287472, 395952, 437197, 874394, 1311591, 1748788, 2623182, 3497576, 5246364, 6995152, 10492728, 20985456]

約数ペア:

[(1, 20985456), (2, 10492728), (3, 6995152), (4, 5246364), (6, 3497576), (8, 2623182), (12, 1748788), (16, 1311591), (24, 874394), (48, 437197), (53, 395952), (73, 287472), (106, 197976), (113, 185712), (146, 143736), (159, 131984), (212, 98988), (219, 95824), (226, 92856), (292, 71868), (318, 65992), (339, 61904), (424, 49494), (438, 47912), (452, 46428), (584, 35934), (636, 32996), (678, 30952), (848, 24747), (876, 23956), (904, 23214), (1168, 17967), (1272, 16498), (1356, 15476), (1752, 11978), (1808, 11607), (2544, 8249), (2712, 7738), (3504, 5989), (3869, 5424)]