20848440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2447}}^1$

素因数の和:2532

約数の個数: 64

約数和(自身を含む): 63452160

約数和(自身を除く): 42603720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2447, 2840, 4260, 4894, 7341, 8520, 9788, 12235, 14682, 19576, 24470, 29364, 36705, 48940, 58728, 73410, 97880, 146820, 173737, 293640, 347474, 521211, 694948, 868685, 1042422, 1389896, 1737370, 2084844, 2606055, 3474740, 4169688, 5212110, 6949480, 10424220, 20848440]

約数ペア:

[(1, 20848440), (2, 10424220), (3, 6949480), (4, 5212110), (5, 4169688), (6, 3474740), (8, 2606055), (10, 2084844), (12, 1737370), (15, 1389896), (20, 1042422), (24, 868685), (30, 694948), (40, 521211), (60, 347474), (71, 293640), (120, 173737), (142, 146820), (213, 97880), (284, 73410), (355, 58728), (426, 48940), (568, 36705), (710, 29364), (852, 24470), (1065, 19576), (1420, 14682), (1704, 12235), (2130, 9788), (2447, 8520), (2840, 7341), (4260, 4894)]