20125040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{523}}^1$

素因数の和:586

約数の個数: 80

約数和(自身を含む): 51850848

約数和(自身を除く): 31725808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 481, 520, 523, 592, 740, 962, 1040, 1046, 1480, 1924, 2092, 2405, 2615, 2960, 3848, 4184, 4810, 5230, 6799, 7696, 8368, 9620, 10460, 13598, 19240, 19351, 20920, 27196, 33995, 38480, 38702, 41840, 54392, 67990, 77404, 96755, 108784, 135980, 154808, 193510, 251563, 271960, 309616, 387020, 503126, 543920, 774040, 1006252, 1257815, 1548080, 2012504, 2515630, 4025008, 5031260, 10062520, 20125040]

約数ペア:

[(1, 20125040), (2, 10062520), (4, 5031260), (5, 4025008), (8, 2515630), (10, 2012504), (13, 1548080), (16, 1257815), (20, 1006252), (26, 774040), (37, 543920), (40, 503126), (52, 387020), (65, 309616), (74, 271960), (80, 251563), (104, 193510), (130, 154808), (148, 135980), (185, 108784), (208, 96755), (260, 77404), (296, 67990), (370, 54392), (481, 41840), (520, 38702), (523, 38480), (592, 33995), (740, 27196), (962, 20920), (1040, 19351), (1046, 19240), (1480, 13598), (1924, 10460), (2092, 9620), (2405, 8368), (2615, 7696), (2960, 6799), (3848, 5230), (4184, 4810)]