18502020

素因数分解:

$2^2\times 3^9\times 5^1\times {\mathrm{47}}^1$

素因数の和:83

約数の個数: 120

約数和(自身を含む): 59520384

約数和(自身を除く): 41018364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 47, 54, 60, 81, 90, 94, 108, 135, 141, 162, 180, 188, 235, 243, 270, 282, 324, 405, 423, 470, 486, 540, 564, 705, 729, 810, 846, 940, 972, 1215, 1269, 1410, 1458, 1620, 1692, 2115, 2187, 2430, 2538, 2820, 2916, 3645, 3807, 4230, 4374, 4860, 5076, 6345, 6561, 7290, 7614, 8460, 8748, 10935, 11421, 12690, 13122, 14580, 15228, 19035, 19683, 21870, 22842, 25380, 26244, 32805, 34263, 38070, 39366, 43740, 45684, 57105, 65610, 68526, 76140, 78732, 98415, 102789, 114210, 131220, 137052, 171315, 196830, 205578, 228420, 308367, 342630, 393660, 411156, 513945, 616734, 685260, 925101, 1027890, 1233468, 1541835, 1850202, 2055780, 3083670, 3700404, 4625505, 6167340, 9251010, 18502020]

約数ペア:

[(1, 18502020), (2, 9251010), (3, 6167340), (4, 4625505), (5, 3700404), (6, 3083670), (9, 2055780), (10, 1850202), (12, 1541835), (15, 1233468), (18, 1027890), (20, 925101), (27, 685260), (30, 616734), (36, 513945), (45, 411156), (47, 393660), (54, 342630), (60, 308367), (81, 228420), (90, 205578), (94, 196830), (108, 171315), (135, 137052), (141, 131220), (162, 114210), (180, 102789), (188, 98415), (235, 78732), (243, 76140), (270, 68526), (282, 65610), (324, 57105), (405, 45684), (423, 43740), (470, 39366), (486, 38070), (540, 34263), (564, 32805), (705, 26244), (729, 25380), (810, 22842), (846, 21870), (940, 19683), (972, 19035), (1215, 15228), (1269, 14580), (1410, 13122), (1458, 12690), (1620, 11421), (1692, 10935), (2115, 8748), (2187, 8460), (2430, 7614), (2538, 7290), (2820, 6561), (2916, 6345), (3645, 5076), (3807, 4860), (4230, 4374)]