18961120

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6971}}^1$

素因数の和:7003

約数の個数: 48

約数和(自身を含む): 47437488

約数和(自身を除く): 28476368

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, 6971, 13942, 27884, 34855, 55768, 69710, 111536, 118507, 139420, 223072, 237014, 278840, 474028, 557680, 592535, 948056, 1115360, 1185070, 1896112, 2370140, 3792224, 4740280, 9480560, 18961120]

約数ペア:

[(1, 18961120), (2, 9480560), (4, 4740280), (5, 3792224), (8, 2370140), (10, 1896112), (16, 1185070), (17, 1115360), (20, 948056), (32, 592535), (34, 557680), (40, 474028), (68, 278840), (80, 237014), (85, 223072), (136, 139420), (160, 118507), (170, 111536), (272, 69710), (340, 55768), (544, 34855), (680, 27884), (1360, 13942), (2720, 6971)]