21715512

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 68328960

約数和(自身を除く): 46613448

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 61, 78, 84, 91, 104, 122, 156, 163, 168, 182, 183, 244, 273, 312, 326, 364, 366, 427, 488, 489, 546, 652, 728, 732, 793, 854, 978, 1092, 1141, 1281, 1304, 1464, 1586, 1708, 1956, 2119, 2184, 2282, 2379, 2562, 3172, 3416, 3423, 3912, 4238, 4564, 4758, 5124, 5551, 6344, 6357, 6846, 8476, 9128, 9516, 9943, 10248, 11102, 12714, 13692, 14833, 16653, 16952, 19032, 19886, 22204, 25428, 27384, 29666, 29829, 33306, 39772, 44408, 44499, 50856, 59332, 59658, 66612, 69601, 79544, 88998, 118664, 119316, 129259, 133224, 139202, 177996, 208803, 238632, 258518, 278404, 355992, 387777, 417606, 517036, 556808, 775554, 835212, 904813, 1034072, 1551108, 1670424, 1809626, 2714439, 3102216, 3619252, 5428878, 7238504, 10857756, 21715512]

約数ペア:

[(1, 21715512), (2, 10857756), (3, 7238504), (4, 5428878), (6, 3619252), (7, 3102216), (8, 2714439), (12, 1809626), (13, 1670424), (14, 1551108), (21, 1034072), (24, 904813), (26, 835212), (28, 775554), (39, 556808), (42, 517036), (52, 417606), (56, 387777), (61, 355992), (78, 278404), (84, 258518), (91, 238632), (104, 208803), (122, 177996), (156, 139202), (163, 133224), (168, 129259), (182, 119316), (183, 118664), (244, 88998), (273, 79544), (312, 69601), (326, 66612), (364, 59658), (366, 59332), (427, 50856), (488, 44499), (489, 44408), (546, 39772), (652, 33306), (728, 29829), (732, 29666), (793, 27384), (854, 25428), (978, 22204), (1092, 19886), (1141, 19032), (1281, 16952), (1304, 16653), (1464, 14833), (1586, 13692), (1708, 12714), (1956, 11102), (2119, 10248), (2184, 9943), (2282, 9516), (2379, 9128), (2562, 8476), (3172, 6846), (3416, 6357), (3423, 6344), (3912, 5551), (4238, 5124), (4564, 4758)]