18919432

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 43557120

約数和(自身を除く): 24637688

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 37, 46, 56, 74, 92, 148, 161, 184, 259, 296, 322, 397, 518, 644, 794, 851, 1036, 1288, 1588, 1702, 2072, 2779, 3176, 3404, 5558, 5957, 6808, 9131, 11116, 11914, 14689, 18262, 22232, 23828, 29378, 36524, 47656, 58756, 63917, 73048, 102823, 117512, 127834, 205646, 255668, 337847, 411292, 511336, 675694, 822584, 1351388, 2364929, 2702776, 4729858, 9459716, 18919432]

約数ペア:

[(1, 18919432), (2, 9459716), (4, 4729858), (7, 2702776), (8, 2364929), (14, 1351388), (23, 822584), (28, 675694), (37, 511336), (46, 411292), (56, 337847), (74, 255668), (92, 205646), (148, 127834), (161, 117512), (184, 102823), (259, 73048), (296, 63917), (322, 58756), (397, 47656), (518, 36524), (644, 29378), (794, 23828), (851, 22232), (1036, 18262), (1288, 14689), (1588, 11914), (1702, 11116), (2072, 9131), (2779, 6808), (3176, 5957), (3404, 5558)]