20183480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 48142080

約数和(自身を除く): 27958600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 397, 410, 620, 794, 820, 1240, 1271, 1588, 1640, 1985, 2542, 3176, 3970, 5084, 6355, 7940, 10168, 12307, 12710, 15880, 16277, 24614, 25420, 32554, 49228, 50840, 61535, 65108, 81385, 98456, 123070, 130216, 162770, 246140, 325540, 492280, 504587, 651080, 1009174, 2018348, 2522935, 4036696, 5045870, 10091740, 20183480]

約数ペア:

[(1, 20183480), (2, 10091740), (4, 5045870), (5, 4036696), (8, 2522935), (10, 2018348), (20, 1009174), (31, 651080), (40, 504587), (41, 492280), (62, 325540), (82, 246140), (124, 162770), (155, 130216), (164, 123070), (205, 98456), (248, 81385), (310, 65108), (328, 61535), (397, 50840), (410, 49228), (620, 32554), (794, 25420), (820, 24614), (1240, 16277), (1271, 15880), (1588, 12710), (1640, 12307), (1985, 10168), (2542, 7940), (3176, 6355), (3970, 5084)]