645660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 2083536

約数和(自身を除く): 1437876

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 211, 255, 306, 340, 422, 510, 612, 633, 765, 844, 1020, 1055, 1266, 1530, 1899, 2110, 2532, 3060, 3165, 3587, 3798, 4220, 6330, 7174, 7596, 9495, 10761, 12660, 14348, 17935, 18990, 21522, 32283, 35870, 37980, 43044, 53805, 64566, 71740, 107610, 129132, 161415, 215220, 322830, 645660]

約数ペア:

[(1, 645660), (2, 322830), (3, 215220), (4, 161415), (5, 129132), (6, 107610), (9, 71740), (10, 64566), (12, 53805), (15, 43044), (17, 37980), (18, 35870), (20, 32283), (30, 21522), (34, 18990), (36, 17935), (45, 14348), (51, 12660), (60, 10761), (68, 9495), (85, 7596), (90, 7174), (102, 6330), (153, 4220), (170, 3798), (180, 3587), (204, 3165), (211, 3060), (255, 2532), (306, 2110), (340, 1899), (422, 1530), (510, 1266), (612, 1055), (633, 1020), (765, 844)]