18918604

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 37094400

約数和(自身を除く): 18175796

約数列:

[1, 2, 4, 19, 23, 38, 46, 76, 79, 92, 137, 158, 274, 316, 437, 548, 874, 1501, 1748, 1817, 2603, 3002, 3151, 3634, 5206, 6004, 6302, 7268, 10412, 10823, 12604, 21646, 34523, 43292, 59869, 69046, 119738, 138092, 205637, 239476, 248929, 411274, 497858, 822548, 995716, 4729651, 9459302, 18918604]

約数ペア:

[(1, 18918604), (2, 9459302), (4, 4729651), (19, 995716), (23, 822548), (38, 497858), (46, 411274), (76, 248929), (79, 239476), (92, 205637), (137, 138092), (158, 119738), (274, 69046), (316, 59869), (437, 43292), (548, 34523), (874, 21646), (1501, 12604), (1748, 10823), (1817, 10412), (2603, 7268), (3002, 6302), (3151, 6004), (3634, 5206)]