21549540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1$

素因数の和:637

約数の個数: 96

約数和(自身を含む): 65729664

約数和(自身を除く): 44180124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 37, 51, 60, 68, 74, 85, 102, 111, 148, 170, 185, 204, 222, 255, 340, 370, 444, 510, 555, 571, 629, 740, 1020, 1110, 1142, 1258, 1713, 1887, 2220, 2284, 2516, 2855, 3145, 3426, 3774, 5710, 6290, 6852, 7548, 8565, 9435, 9707, 11420, 12580, 17130, 18870, 19414, 21127, 29121, 34260, 37740, 38828, 42254, 48535, 58242, 63381, 84508, 97070, 105635, 116484, 126762, 145605, 194140, 211270, 253524, 291210, 316905, 359159, 422540, 582420, 633810, 718318, 1077477, 1267620, 1436636, 1795795, 2154954, 3591590, 4309908, 5387385, 7183180, 10774770, 21549540]

約数ペア:

[(1, 21549540), (2, 10774770), (3, 7183180), (4, 5387385), (5, 4309908), (6, 3591590), (10, 2154954), (12, 1795795), (15, 1436636), (17, 1267620), (20, 1077477), (30, 718318), (34, 633810), (37, 582420), (51, 422540), (60, 359159), (68, 316905), (74, 291210), (85, 253524), (102, 211270), (111, 194140), (148, 145605), (170, 126762), (185, 116484), (204, 105635), (222, 97070), (255, 84508), (340, 63381), (370, 58242), (444, 48535), (510, 42254), (555, 38828), (571, 37740), (629, 34260), (740, 29121), (1020, 21127), (1110, 19414), (1142, 18870), (1258, 17130), (1713, 12580), (1887, 11420), (2220, 9707), (2284, 9435), (2516, 8565), (2855, 7548), (3145, 6852), (3426, 6290), (3774, 5710)]