18458120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 44280000

約数和(自身を除く): 25821880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 163, 190, 298, 326, 380, 596, 652, 745, 760, 815, 1192, 1304, 1490, 1630, 2831, 2980, 3097, 3260, 5662, 5960, 6194, 6520, 11324, 12388, 14155, 15485, 22648, 24287, 24776, 28310, 30970, 48574, 56620, 61940, 97148, 113240, 121435, 123880, 194296, 242870, 461453, 485740, 922906, 971480, 1845812, 2307265, 3691624, 4614530, 9229060, 18458120]

約数ペア:

[(1, 18458120), (2, 9229060), (4, 4614530), (5, 3691624), (8, 2307265), (10, 1845812), (19, 971480), (20, 922906), (38, 485740), (40, 461453), (76, 242870), (95, 194296), (149, 123880), (152, 121435), (163, 113240), (190, 97148), (298, 61940), (326, 56620), (380, 48574), (596, 30970), (652, 28310), (745, 24776), (760, 24287), (815, 22648), (1192, 15485), (1304, 14155), (1490, 12388), (1630, 11324), (2831, 6520), (2980, 6194), (3097, 5960), (3260, 5662)]