19940320

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7331}}^1$

素因数の和:7363

約数の個数: 48

約数和(自身を含む): 49886928

約数和(自身を除く): 29946608

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7331, 14662, 29324, 36655, 58648, 73310, 117296, 124627, 146620, 234592, 249254, 293240, 498508, 586480, 623135, 997016, 1172960, 1246270, 1994032, 2492540, 3988064, 4985080, 9970160, 19940320]

約数ペア:

[(1, 19940320), (2, 9970160), (4, 4985080), (5, 3988064), (8, 2492540), (10, 1994032), (16, 1246270), (17, 1172960), (20, 997016), (32, 623135), (34, 586480), (40, 498508), (68, 293240), (80, 249254), (85, 234592), (136, 146620), (160, 124627), (170, 117296), (272, 73310), (340, 58648), (544, 36655), (680, 29324), (1360, 14662), (2720, 7331)]