16991478

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{569}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 43776000

約数和(自身を除く): 26784522

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 79, 126, 158, 189, 237, 378, 474, 553, 569, 711, 1106, 1138, 1422, 1659, 1707, 2133, 3318, 3414, 3983, 4266, 4977, 5121, 7966, 9954, 10242, 11949, 14931, 15363, 23898, 29862, 30726, 35847, 44951, 71694, 89902, 107541, 134853, 215082, 269706, 314657, 404559, 629314, 809118, 943971, 1213677, 1887942, 2427354, 2831913, 5663826, 8495739, 16991478]

約数ペア:

[(1, 16991478), (2, 8495739), (3, 5663826), (6, 2831913), (7, 2427354), (9, 1887942), (14, 1213677), (18, 943971), (21, 809118), (27, 629314), (42, 404559), (54, 314657), (63, 269706), (79, 215082), (126, 134853), (158, 107541), (189, 89902), (237, 71694), (378, 44951), (474, 35847), (553, 30726), (569, 29862), (711, 23898), (1106, 15363), (1138, 14931), (1422, 11949), (1659, 10242), (1707, 9954), (2133, 7966), (3318, 5121), (3414, 4977), (3983, 4266)]