31211320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 87091200

約数和(自身を除く): 55879880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 79, 83, 85, 119, 136, 140, 158, 166, 170, 238, 280, 316, 332, 340, 395, 415, 476, 553, 581, 595, 632, 664, 680, 790, 830, 952, 1106, 1162, 1190, 1343, 1411, 1580, 1660, 2212, 2324, 2380, 2686, 2765, 2822, 2905, 3160, 3320, 4424, 4648, 4760, 5372, 5530, 5644, 5810, 6557, 6715, 7055, 9401, 9877, 10744, 11060, 11288, 11620, 13114, 13430, 14110, 18802, 19754, 22120, 23240, 26228, 26860, 28220, 32785, 37604, 39508, 45899, 47005, 49385, 52456, 53720, 56440, 65570, 75208, 79016, 91798, 94010, 98770, 111469, 131140, 183596, 188020, 197540, 222938, 229495, 262280, 367192, 376040, 395080, 445876, 458990, 557345, 780283, 891752, 917980, 1114690, 1560566, 1835960, 2229380, 3121132, 3901415, 4458760, 6242264, 7802830, 15605660, 31211320]

約数ペア:

[(1, 31211320), (2, 15605660), (4, 7802830), (5, 6242264), (7, 4458760), (8, 3901415), (10, 3121132), (14, 2229380), (17, 1835960), (20, 1560566), (28, 1114690), (34, 917980), (35, 891752), (40, 780283), (56, 557345), (68, 458990), (70, 445876), (79, 395080), (83, 376040), (85, 367192), (119, 262280), (136, 229495), (140, 222938), (158, 197540), (166, 188020), (170, 183596), (238, 131140), (280, 111469), (316, 98770), (332, 94010), (340, 91798), (395, 79016), (415, 75208), (476, 65570), (553, 56440), (581, 53720), (595, 52456), (632, 49385), (664, 47005), (680, 45899), (790, 39508), (830, 37604), (952, 32785), (1106, 28220), (1162, 26860), (1190, 26228), (1343, 23240), (1411, 22120), (1580, 19754), (1660, 18802), (2212, 14110), (2324, 13430), (2380, 13114), (2686, 11620), (2765, 11288), (2822, 11060), (2905, 10744), (3160, 9877), (3320, 9401), (4424, 7055), (4648, 6715), (4760, 6557), (5372, 5810), (5530, 5644)]