31447620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:314

約数の個数: 144

約数和(自身を含む): 103783680

約数和(自身を除く): 72336060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 43, 45, 51, 60, 68, 85, 86, 90, 102, 129, 153, 170, 172, 180, 204, 215, 239, 255, 258, 306, 340, 387, 430, 478, 510, 516, 612, 645, 717, 731, 765, 774, 860, 956, 1020, 1195, 1290, 1434, 1462, 1530, 1548, 1935, 2151, 2193, 2390, 2580, 2868, 2924, 3060, 3585, 3655, 3870, 4063, 4302, 4386, 4780, 6579, 7170, 7310, 7740, 8126, 8604, 8772, 10277, 10755, 10965, 12189, 13158, 14340, 14620, 16252, 20315, 20554, 21510, 21930, 24378, 26316, 30831, 32895, 36567, 40630, 41108, 43020, 43860, 48756, 51385, 60945, 61662, 65790, 73134, 81260, 92493, 102770, 121890, 123324, 131580, 146268, 154155, 174709, 182835, 184986, 205540, 243780, 308310, 349418, 365670, 369972, 462465, 524127, 616620, 698836, 731340, 873545, 924930, 1048254, 1572381, 1747090, 1849860, 2096508, 2620635, 3144762, 3494180, 5241270, 6289524, 7861905, 10482540, 15723810, 31447620]

約数ペア:

[(1, 31447620), (2, 15723810), (3, 10482540), (4, 7861905), (5, 6289524), (6, 5241270), (9, 3494180), (10, 3144762), (12, 2620635), (15, 2096508), (17, 1849860), (18, 1747090), (20, 1572381), (30, 1048254), (34, 924930), (36, 873545), (43, 731340), (45, 698836), (51, 616620), (60, 524127), (68, 462465), (85, 369972), (86, 365670), (90, 349418), (102, 308310), (129, 243780), (153, 205540), (170, 184986), (172, 182835), (180, 174709), (204, 154155), (215, 146268), (239, 131580), (255, 123324), (258, 121890), (306, 102770), (340, 92493), (387, 81260), (430, 73134), (478, 65790), (510, 61662), (516, 60945), (612, 51385), (645, 48756), (717, 43860), (731, 43020), (765, 41108), (774, 40630), (860, 36567), (956, 32895), (1020, 30831), (1195, 26316), (1290, 24378), (1434, 21930), (1462, 21510), (1530, 20554), (1548, 20315), (1935, 16252), (2151, 14620), (2193, 14340), (2390, 13158), (2580, 12189), (2868, 10965), (2924, 10755), (3060, 10277), (3585, 8772), (3655, 8604), (3870, 8126), (4063, 7740), (4302, 7310), (4386, 7170), (4780, 6579)]