657456680

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:507

約数の個数: 128

約数和(自身を含む): 1617408000

約数和(自身を除く): 959951320

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 31, 40, 47, 58, 62, 94, 116, 124, 145, 155, 188, 232, 235, 248, 290, 310, 376, 389, 470, 580, 620, 778, 899, 940, 1160, 1240, 1363, 1457, 1556, 1798, 1880, 1945, 2726, 2914, 3112, 3596, 3890, 4495, 5452, 5828, 6815, 7192, 7285, 7780, 8990, 10904, 11281, 11656, 12059, 13630, 14570, 15560, 17980, 18283, 22562, 24118, 27260, 29140, 35960, 36566, 42253, 45124, 48236, 54520, 56405, 58280, 60295, 73132, 84506, 90248, 91415, 96472, 112810, 120590, 146264, 169012, 182830, 211265, 225620, 241180, 338024, 349711, 365660, 422530, 451240, 482360, 530207, 566773, 699422, 731320, 845060, 1060414, 1133546, 1398844, 1690120, 1748555, 2120828, 2267092, 2651035, 2797688, 2833865, 3497110, 4241656, 4534184, 5302070, 5667730, 6994220, 10604140, 11335460, 13988440, 16436417, 21208280, 22670920, 32872834, 65745668, 82182085, 131491336, 164364170, 328728340, 657456680]

約数ペア:

[(1, 657456680), (2, 328728340), (4, 164364170), (5, 131491336), (8, 82182085), (10, 65745668), (20, 32872834), (29, 22670920), (31, 21208280), (40, 16436417), (47, 13988440), (58, 11335460), (62, 10604140), (94, 6994220), (116, 5667730), (124, 5302070), (145, 4534184), (155, 4241656), (188, 3497110), (232, 2833865), (235, 2797688), (248, 2651035), (290, 2267092), (310, 2120828), (376, 1748555), (389, 1690120), (470, 1398844), (580, 1133546), (620, 1060414), (778, 845060), (899, 731320), (940, 699422), (1160, 566773), (1240, 530207), (1363, 482360), (1457, 451240), (1556, 422530), (1798, 365660), (1880, 349711), (1945, 338024), (2726, 241180), (2914, 225620), (3112, 211265), (3596, 182830), (3890, 169012), (4495, 146264), (5452, 120590), (5828, 112810), (6815, 96472), (7192, 91415), (7285, 90248), (7780, 84506), (8990, 73132), (10904, 60295), (11281, 58280), (11656, 56405), (12059, 54520), (13630, 48236), (14570, 45124), (15560, 42253), (17980, 36566), (18283, 35960), (22562, 29140), (24118, 27260)]