20836960

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4201}}^1$

素因数の和:4247

約数の個数: 48

約数和(自身を含む): 50827392

約数和(自身を除く): 29990432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4201, 4960, 8402, 16804, 21005, 33608, 42010, 67216, 84020, 130231, 134432, 168040, 260462, 336080, 520924, 651155, 672160, 1041848, 1302310, 2083696, 2604620, 4167392, 5209240, 10418480, 20836960]

約数ペア:

[(1, 20836960), (2, 10418480), (4, 5209240), (5, 4167392), (8, 2604620), (10, 2083696), (16, 1302310), (20, 1041848), (31, 672160), (32, 651155), (40, 520924), (62, 336080), (80, 260462), (124, 168040), (155, 134432), (160, 130231), (248, 84020), (310, 67216), (496, 42010), (620, 33608), (992, 21005), (1240, 16804), (2480, 8402), (4201, 4960)]