21202090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1013}}^1$

素因数の和:1063

約数の個数: 64

約数和(自身を含む): 49061376

約数和(自身を除く): 27859286

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, 1013, 1495, 1610, 2026, 2093, 2990, 4186, 5065, 7091, 10130, 10465, 13169, 14182, 20930, 23299, 26338, 35455, 46598, 65845, 70910, 92183, 116495, 131690, 163093, 184366, 232990, 302887, 326186, 460915, 605774, 815465, 921830, 1514435, 1630930, 2120209, 3028870, 4240418, 10601045, 21202090]

約数ペア:

[(1, 21202090), (2, 10601045), (5, 4240418), (7, 3028870), (10, 2120209), (13, 1630930), (14, 1514435), (23, 921830), (26, 815465), (35, 605774), (46, 460915), (65, 326186), (70, 302887), (91, 232990), (115, 184366), (130, 163093), (161, 131690), (182, 116495), (230, 92183), (299, 70910), (322, 65845), (455, 46598), (598, 35455), (805, 26338), (910, 23299), (1013, 20930), (1495, 14182), (1610, 13169), (2026, 10465), (2093, 10130), (2990, 7091), (4186, 5065)]