9821920

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:212

約数の個数: 96

約数和(自身を含む): 25800768

約数和(自身を除く): 15978848

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 32, 34, 40, 46, 68, 80, 85, 92, 115, 136, 157, 160, 170, 184, 230, 272, 314, 340, 368, 391, 460, 544, 628, 680, 736, 782, 785, 920, 1256, 1360, 1564, 1570, 1840, 1955, 2512, 2669, 2720, 3128, 3140, 3611, 3680, 3910, 5024, 5338, 6256, 6280, 7222, 7820, 10676, 12512, 12560, 13345, 14444, 15640, 18055, 21352, 25120, 26690, 28888, 31280, 36110, 42704, 53380, 57776, 61387, 62560, 72220, 85408, 106760, 115552, 122774, 144440, 213520, 245548, 288880, 306935, 427040, 491096, 577760, 613870, 982192, 1227740, 1964384, 2455480, 4910960, 9821920]

約数ペア:

[(1, 9821920), (2, 4910960), (4, 2455480), (5, 1964384), (8, 1227740), (10, 982192), (16, 613870), (17, 577760), (20, 491096), (23, 427040), (32, 306935), (34, 288880), (40, 245548), (46, 213520), (68, 144440), (80, 122774), (85, 115552), (92, 106760), (115, 85408), (136, 72220), (157, 62560), (160, 61387), (170, 57776), (184, 53380), (230, 42704), (272, 36110), (314, 31280), (340, 28888), (368, 26690), (391, 25120), (460, 21352), (544, 18055), (628, 15640), (680, 14444), (736, 13345), (782, 12560), (785, 12512), (920, 10676), (1256, 7820), (1360, 7222), (1564, 6280), (1570, 6256), (1840, 5338), (1955, 5024), (2512, 3910), (2669, 3680), (2720, 3611), (3128, 3140)]