212171440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6581}}^1$

素因数の和:6638

約数の個数: 80

約数和(自身を含む): 548464896

約数和(自身を除く): 336293456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 6581, 8060, 13162, 16120, 26324, 32240, 32905, 52648, 65810, 85553, 105296, 131620, 171106, 204011, 263240, 342212, 408022, 427765, 526480, 684424, 816044, 855530, 1020055, 1368848, 1632088, 1711060, 2040110, 2652143, 3264176, 3422120, 4080220, 5304286, 6844240, 8160440, 10608572, 13260715, 16320880, 21217144, 26521430, 42434288, 53042860, 106085720, 212171440]

約数ペア:

[(1, 212171440), (2, 106085720), (4, 53042860), (5, 42434288), (8, 26521430), (10, 21217144), (13, 16320880), (16, 13260715), (20, 10608572), (26, 8160440), (31, 6844240), (40, 5304286), (52, 4080220), (62, 3422120), (65, 3264176), (80, 2652143), (104, 2040110), (124, 1711060), (130, 1632088), (155, 1368848), (208, 1020055), (248, 855530), (260, 816044), (310, 684424), (403, 526480), (496, 427765), (520, 408022), (620, 342212), (806, 263240), (1040, 204011), (1240, 171106), (1612, 131620), (2015, 105296), (2480, 85553), (3224, 65810), (4030, 52648), (6448, 32905), (6581, 32240), (8060, 26324), (13162, 16120)]