20718240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2539}}^1$

素因数の和:2574

約数の個数: 96

約数和(自身を含む): 69128640

約数和(自身を除く): 48410400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 68, 80, 85, 96, 102, 120, 136, 160, 170, 204, 240, 255, 272, 340, 408, 480, 510, 544, 680, 816, 1020, 1360, 1632, 2040, 2539, 2720, 4080, 5078, 7617, 8160, 10156, 12695, 15234, 20312, 25390, 30468, 38085, 40624, 43163, 50780, 60936, 76170, 81248, 86326, 101560, 121872, 129489, 152340, 172652, 203120, 215815, 243744, 258978, 304680, 345304, 406240, 431630, 517956, 609360, 647445, 690608, 863260, 1035912, 1218720, 1294890, 1381216, 1726520, 2071824, 2589780, 3453040, 4143648, 5179560, 6906080, 10359120, 20718240]

約数ペア:

[(1, 20718240), (2, 10359120), (3, 6906080), (4, 5179560), (5, 4143648), (6, 3453040), (8, 2589780), (10, 2071824), (12, 1726520), (15, 1381216), (16, 1294890), (17, 1218720), (20, 1035912), (24, 863260), (30, 690608), (32, 647445), (34, 609360), (40, 517956), (48, 431630), (51, 406240), (60, 345304), (68, 304680), (80, 258978), (85, 243744), (96, 215815), (102, 203120), (120, 172652), (136, 152340), (160, 129489), (170, 121872), (204, 101560), (240, 86326), (255, 81248), (272, 76170), (340, 60936), (408, 50780), (480, 43163), (510, 40624), (544, 38085), (680, 30468), (816, 25390), (1020, 20312), (1360, 15234), (1632, 12695), (2040, 10156), (2539, 8160), (2720, 7617), (4080, 5078)]