21407756

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 42389760

約数和(自身を除く): 20982004

約数列:

[1, 2, 4, 19, 23, 37, 38, 46, 74, 76, 92, 148, 331, 437, 662, 703, 851, 874, 1324, 1406, 1702, 1748, 2812, 3404, 6289, 7613, 12247, 12578, 15226, 16169, 24494, 25156, 30452, 32338, 48988, 64676, 144647, 232693, 281681, 289294, 465386, 563362, 578588, 930772, 1126724, 5351939, 10703878, 21407756]

約数ペア:

[(1, 21407756), (2, 10703878), (4, 5351939), (19, 1126724), (23, 930772), (37, 578588), (38, 563362), (46, 465386), (74, 289294), (76, 281681), (92, 232693), (148, 144647), (331, 64676), (437, 48988), (662, 32338), (703, 30452), (851, 25156), (874, 24494), (1324, 16169), (1406, 15226), (1702, 12578), (1748, 12247), (2812, 7613), (3404, 6289)]