18477880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{593}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 26428520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 593, 760, 779, 820, 1186, 1558, 1640, 2372, 2965, 3116, 3895, 4744, 5930, 6232, 7790, 11267, 11860, 15580, 22534, 23720, 24313, 31160, 45068, 48626, 56335, 90136, 97252, 112670, 121565, 194504, 225340, 243130, 450680, 461947, 486260, 923894, 972520, 1847788, 2309735, 3695576, 4619470, 9238940, 18477880]

約数ペア:

[(1, 18477880), (2, 9238940), (4, 4619470), (5, 3695576), (8, 2309735), (10, 1847788), (19, 972520), (20, 923894), (38, 486260), (40, 461947), (41, 450680), (76, 243130), (82, 225340), (95, 194504), (152, 121565), (164, 112670), (190, 97252), (205, 90136), (328, 56335), (380, 48626), (410, 45068), (593, 31160), (760, 24313), (779, 23720), (820, 22534), (1186, 15580), (1558, 11860), (1640, 11267), (2372, 7790), (2965, 6232), (3116, 5930), (3895, 4744)]