20281816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23263784

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 47, 68, 76, 94, 136, 152, 167, 188, 323, 334, 376, 646, 668, 799, 893, 1292, 1336, 1598, 1786, 2584, 2839, 3173, 3196, 3572, 5678, 6346, 6392, 7144, 7849, 11356, 12692, 15181, 15698, 22712, 25384, 30362, 31396, 53941, 60724, 62792, 107882, 121448, 133433, 149131, 215764, 266866, 298262, 431528, 533732, 596524, 1067464, 1193048, 2535227, 5070454, 10140908, 20281816]

約数ペア:

[(1, 20281816), (2, 10140908), (4, 5070454), (8, 2535227), (17, 1193048), (19, 1067464), (34, 596524), (38, 533732), (47, 431528), (68, 298262), (76, 266866), (94, 215764), (136, 149131), (152, 133433), (167, 121448), (188, 107882), (323, 62792), (334, 60724), (376, 53941), (646, 31396), (668, 30362), (799, 25384), (893, 22712), (1292, 15698), (1336, 15181), (1598, 12692), (1786, 11356), (2584, 7849), (2839, 7144), (3173, 6392), (3196, 6346), (3572, 5678)]