21003528

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 128

約数和(自身を含む): 66124800

約数和(自身を除く): 45121272

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 59, 78, 84, 91, 104, 118, 156, 163, 168, 177, 182, 236, 273, 312, 326, 354, 364, 413, 472, 489, 546, 652, 708, 728, 767, 826, 978, 1092, 1141, 1239, 1304, 1416, 1534, 1652, 1956, 2119, 2184, 2282, 2301, 2478, 3068, 3304, 3423, 3912, 4238, 4564, 4602, 4956, 5369, 6136, 6357, 6846, 8476, 9128, 9204, 9617, 9912, 10738, 12714, 13692, 14833, 16107, 16952, 18408, 19234, 21476, 25428, 27384, 28851, 29666, 32214, 38468, 42952, 44499, 50856, 57702, 59332, 64428, 67319, 76936, 88998, 115404, 118664, 125021, 128856, 134638, 177996, 201957, 230808, 250042, 269276, 355992, 375063, 403914, 500084, 538552, 750126, 807828, 875147, 1000168, 1500252, 1615656, 1750294, 2625441, 3000504, 3500588, 5250882, 7001176, 10501764, 21003528]

約数ペア:

[(1, 21003528), (2, 10501764), (3, 7001176), (4, 5250882), (6, 3500588), (7, 3000504), (8, 2625441), (12, 1750294), (13, 1615656), (14, 1500252), (21, 1000168), (24, 875147), (26, 807828), (28, 750126), (39, 538552), (42, 500084), (52, 403914), (56, 375063), (59, 355992), (78, 269276), (84, 250042), (91, 230808), (104, 201957), (118, 177996), (156, 134638), (163, 128856), (168, 125021), (177, 118664), (182, 115404), (236, 88998), (273, 76936), (312, 67319), (326, 64428), (354, 59332), (364, 57702), (413, 50856), (472, 44499), (489, 42952), (546, 38468), (652, 32214), (708, 29666), (728, 28851), (767, 27384), (826, 25428), (978, 21476), (1092, 19234), (1141, 18408), (1239, 16952), (1304, 16107), (1416, 14833), (1534, 13692), (1652, 12714), (1956, 10738), (2119, 9912), (2184, 9617), (2282, 9204), (2301, 9128), (2478, 8476), (3068, 6846), (3304, 6357), (3423, 6136), (3912, 5369), (4238, 4956), (4564, 4602)]