21060636160

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{265381}}^1$

素因数の和:265435

約数の個数: 80

約数和(自身を含む): 52125270912

約数和(自身を除く): 31064634752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 9920, 15872, 19840, 39680, 79360, 265381, 530762, 1061524, 1326905, 2123048, 2653810, 4246096, 5307620, 8226811, 8492192, 10615240, 16453622, 16984384, 21230480, 32907244, 33968768, 41134055, 42460960, 65814488, 67937536, 82268110, 84921920, 131628976, 135875072, 164536220, 169843840, 263257952, 329072440, 339687680, 526515904, 658144880, 679375360, 1053031808, 1316289760, 2106063616, 2632579520, 4212127232, 5265159040, 10530318080, 21060636160]

約数ペア:

[(1, 21060636160), (2, 10530318080), (4, 5265159040), (5, 4212127232), (8, 2632579520), (10, 2106063616), (16, 1316289760), (20, 1053031808), (31, 679375360), (32, 658144880), (40, 526515904), (62, 339687680), (64, 329072440), (80, 263257952), (124, 169843840), (128, 164536220), (155, 135875072), (160, 131628976), (248, 84921920), (256, 82268110), (310, 67937536), (320, 65814488), (496, 42460960), (512, 41134055), (620, 33968768), (640, 32907244), (992, 21230480), (1240, 16984384), (1280, 16453622), (1984, 10615240), (2480, 8492192), (2560, 8226811), (3968, 5307620), (4960, 4246096), (7936, 2653810), (9920, 2123048), (15872, 1326905), (19840, 1061524), (39680, 530762), (79360, 265381)]