21118370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1009}}^1$

素因数の和:1059

約数の個数: 64

約数和(自身を含む): 48867840

約数和(自身を除く): 27749470

約数列:

[1, 2, 5, 7, 10, 13, 14, 23, 26, 35, 46, 65, 70, 91, 115, 130, 161, 182, 230, 299, 322, 455, 598, 805, 910, 1009, 1495, 1610, 2018, 2093, 2990, 4186, 5045, 7063, 10090, 10465, 13117, 14126, 20930, 23207, 26234, 35315, 46414, 65585, 70630, 91819, 116035, 131170, 162449, 183638, 232070, 301691, 324898, 459095, 603382, 812245, 918190, 1508455, 1624490, 2111837, 3016910, 4223674, 10559185, 21118370]

約数ペア:

[(1, 21118370), (2, 10559185), (5, 4223674), (7, 3016910), (10, 2111837), (13, 1624490), (14, 1508455), (23, 918190), (26, 812245), (35, 603382), (46, 459095), (65, 324898), (70, 301691), (91, 232070), (115, 183638), (130, 162449), (161, 131170), (182, 116035), (230, 91819), (299, 70630), (322, 65585), (455, 46414), (598, 35315), (805, 26234), (910, 23207), (1009, 20930), (1495, 14126), (1610, 13117), (2018, 10465), (2093, 10090), (2990, 7063), (4186, 5045)]