21973860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 72648576

約数和(自身を除く): 50674716

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, 167, 170, 172, 180, 204, 215, 255, 258, 306, 334, 340, 387, 430, 501, 510, 516, 612, 645, 668, 731, 765, 774, 835, 860, 1002, 1020, 1290, 1462, 1503, 1530, 1548, 1670, 1935, 2004, 2193, 2505, 2580, 2839, 2924, 3006, 3060, 3340, 3655, 3870, 4386, 5010, 5678, 6012, 6579, 7181, 7310, 7515, 7740, 8517, 8772, 10020, 10965, 11356, 13158, 14195, 14362, 14620, 15030, 17034, 21543, 21930, 25551, 26316, 28390, 28724, 30060, 32895, 34068, 35905, 42585, 43086, 43860, 51102, 56780, 64629, 65790, 71810, 85170, 86172, 102204, 107715, 122077, 127755, 129258, 131580, 143620, 170340, 215430, 244154, 255510, 258516, 323145, 366231, 430860, 488308, 511020, 610385, 646290, 732462, 1098693, 1220770, 1292580, 1464924, 1831155, 2197386, 2441540, 3662310, 4394772, 5493465, 7324620, 10986930, 21973860]

約数ペア:

[(1, 21973860), (2, 10986930), (3, 7324620), (4, 5493465), (5, 4394772), (6, 3662310), (9, 2441540), (10, 2197386), (12, 1831155), (15, 1464924), (17, 1292580), (18, 1220770), (20, 1098693), (30, 732462), (34, 646290), (36, 610385), (43, 511020), (45, 488308), (51, 430860), (60, 366231), (68, 323145), (85, 258516), (86, 255510), (90, 244154), (102, 215430), (129, 170340), (153, 143620), (167, 131580), (170, 129258), (172, 127755), (180, 122077), (204, 107715), (215, 102204), (255, 86172), (258, 85170), (306, 71810), (334, 65790), (340, 64629), (387, 56780), (430, 51102), (501, 43860), (510, 43086), (516, 42585), (612, 35905), (645, 34068), (668, 32895), (731, 30060), (765, 28724), (774, 28390), (835, 26316), (860, 25551), (1002, 21930), (1020, 21543), (1290, 17034), (1462, 15030), (1503, 14620), (1530, 14362), (1548, 14195), (1670, 13158), (1935, 11356), (2004, 10965), (2193, 10020), (2505, 8772), (2580, 8517), (2839, 7740), (2924, 7515), (3006, 7310), (3060, 7181), (3340, 6579), (3655, 6012), (3870, 5678), (4386, 5010)]