20197476

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{419}}^1$

素因数の和:545

約数の個数: 72

約数和(自身を含む): 55648320

約数和(自身を除く): 35450844

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 103, 117, 156, 206, 234, 309, 412, 419, 468, 618, 838, 927, 1236, 1257, 1339, 1676, 1854, 2514, 2678, 3708, 3771, 4017, 5028, 5356, 5447, 7542, 8034, 10894, 12051, 15084, 16068, 16341, 21788, 24102, 32682, 43157, 48204, 49023, 65364, 86314, 98046, 129471, 172628, 196092, 258942, 388413, 517884, 561041, 776826, 1122082, 1553652, 1683123, 2244164, 3366246, 5049369, 6732492, 10098738, 20197476]

約数ペア:

[(1, 20197476), (2, 10098738), (3, 6732492), (4, 5049369), (6, 3366246), (9, 2244164), (12, 1683123), (13, 1553652), (18, 1122082), (26, 776826), (36, 561041), (39, 517884), (52, 388413), (78, 258942), (103, 196092), (117, 172628), (156, 129471), (206, 98046), (234, 86314), (309, 65364), (412, 49023), (419, 48204), (468, 43157), (618, 32682), (838, 24102), (927, 21788), (1236, 16341), (1257, 16068), (1339, 15084), (1676, 12051), (1854, 10894), (2514, 8034), (2678, 7542), (3708, 5447), (3771, 5356), (4017, 5028)]