491671024

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:315

約数の個数: 80

約数和(自身を含む): 1051807680

約数和(自身を除く): 560136656

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 169, 197, 208, 284, 338, 394, 568, 676, 788, 923, 1136, 1352, 1576, 1846, 2197, 2561, 2704, 3152, 3692, 4394, 5122, 7384, 8788, 10244, 11999, 13987, 14768, 17576, 20488, 23998, 27974, 33293, 35152, 40976, 47996, 55948, 66586, 95992, 111896, 133172, 155987, 181831, 191984, 223792, 266344, 311974, 363662, 432809, 532688, 623948, 727324, 865618, 1247896, 1454648, 1731236, 2363803, 2495792, 2909296, 3462472, 4727606, 6924944, 9455212, 18910424, 30729439, 37820848, 61458878, 122917756, 245835512, 491671024]

約数ペア:

[(1, 491671024), (2, 245835512), (4, 122917756), (8, 61458878), (13, 37820848), (16, 30729439), (26, 18910424), (52, 9455212), (71, 6924944), (104, 4727606), (142, 3462472), (169, 2909296), (197, 2495792), (208, 2363803), (284, 1731236), (338, 1454648), (394, 1247896), (568, 865618), (676, 727324), (788, 623948), (923, 532688), (1136, 432809), (1352, 363662), (1576, 311974), (1846, 266344), (2197, 223792), (2561, 191984), (2704, 181831), (3152, 155987), (3692, 133172), (4394, 111896), (5122, 95992), (7384, 66586), (8788, 55948), (10244, 47996), (11999, 40976), (13987, 35152), (14768, 33293), (17576, 27974), (20488, 23998)]