18107960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{359}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 44452800

約数和(自身を除く): 26344840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 97, 104, 130, 194, 260, 359, 388, 485, 520, 718, 776, 970, 1261, 1436, 1795, 1940, 2522, 2872, 3590, 3880, 4667, 5044, 6305, 7180, 9334, 10088, 12610, 14360, 18668, 23335, 25220, 34823, 37336, 46670, 50440, 69646, 93340, 139292, 174115, 186680, 278584, 348230, 452699, 696460, 905398, 1392920, 1810796, 2263495, 3621592, 4526990, 9053980, 18107960]

約数ペア:

[(1, 18107960), (2, 9053980), (4, 4526990), (5, 3621592), (8, 2263495), (10, 1810796), (13, 1392920), (20, 905398), (26, 696460), (40, 452699), (52, 348230), (65, 278584), (97, 186680), (104, 174115), (130, 139292), (194, 93340), (260, 69646), (359, 50440), (388, 46670), (485, 37336), (520, 34823), (718, 25220), (776, 23335), (970, 18668), (1261, 14360), (1436, 12610), (1795, 10088), (1940, 9334), (2522, 7180), (2872, 6305), (3590, 5044), (3880, 4667)]