31172220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 102368448

約数和(自身を除く): 71196228

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 61, 68, 85, 90, 102, 122, 153, 167, 170, 180, 183, 204, 244, 255, 305, 306, 334, 340, 366, 501, 510, 549, 610, 612, 668, 732, 765, 835, 915, 1002, 1020, 1037, 1098, 1220, 1503, 1530, 1670, 1830, 2004, 2074, 2196, 2505, 2745, 2839, 3006, 3060, 3111, 3340, 3660, 4148, 5010, 5185, 5490, 5678, 6012, 6222, 7515, 8517, 9333, 10020, 10187, 10370, 10980, 11356, 12444, 14195, 15030, 15555, 17034, 18666, 20374, 20740, 25551, 28390, 30060, 30561, 31110, 34068, 37332, 40748, 42585, 46665, 50935, 51102, 56780, 61122, 62220, 85170, 91683, 93330, 101870, 102204, 122244, 127755, 152805, 170340, 173179, 183366, 186660, 203740, 255510, 305610, 346358, 366732, 458415, 511020, 519537, 611220, 692716, 865895, 916830, 1039074, 1558611, 1731790, 1833660, 2078148, 2597685, 3117222, 3463580, 5195370, 6234444, 7793055, 10390740, 15586110, 31172220]

約数ペア:

[(1, 31172220), (2, 15586110), (3, 10390740), (4, 7793055), (5, 6234444), (6, 5195370), (9, 3463580), (10, 3117222), (12, 2597685), (15, 2078148), (17, 1833660), (18, 1731790), (20, 1558611), (30, 1039074), (34, 916830), (36, 865895), (45, 692716), (51, 611220), (60, 519537), (61, 511020), (68, 458415), (85, 366732), (90, 346358), (102, 305610), (122, 255510), (153, 203740), (167, 186660), (170, 183366), (180, 173179), (183, 170340), (204, 152805), (244, 127755), (255, 122244), (305, 102204), (306, 101870), (334, 93330), (340, 91683), (366, 85170), (501, 62220), (510, 61122), (549, 56780), (610, 51102), (612, 50935), (668, 46665), (732, 42585), (765, 40748), (835, 37332), (915, 34068), (1002, 31110), (1020, 30561), (1037, 30060), (1098, 28390), (1220, 25551), (1503, 20740), (1530, 20374), (1670, 18666), (1830, 17034), (2004, 15555), (2074, 15030), (2196, 14195), (2505, 12444), (2745, 11356), (2839, 10980), (3006, 10370), (3060, 10187), (3111, 10020), (3340, 9333), (3660, 8517), (4148, 7515), (5010, 6222), (5185, 6012), (5490, 5678)]