21774220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1009}}^1$

素因数の和:1114

約数の個数: 48

約数和(自身を含む): 49885920

約数和(自身を除く): 28111700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 130, 166, 260, 332, 415, 830, 1009, 1079, 1660, 2018, 2158, 4036, 4316, 5045, 5395, 10090, 10790, 13117, 20180, 21580, 26234, 52468, 65585, 83747, 131170, 167494, 262340, 334988, 418735, 837470, 1088711, 1674940, 2177422, 4354844, 5443555, 10887110, 21774220]

約数ペア:

[(1, 21774220), (2, 10887110), (4, 5443555), (5, 4354844), (10, 2177422), (13, 1674940), (20, 1088711), (26, 837470), (52, 418735), (65, 334988), (83, 262340), (130, 167494), (166, 131170), (260, 83747), (332, 65585), (415, 52468), (830, 26234), (1009, 21580), (1079, 20180), (1660, 13117), (2018, 10790), (2158, 10090), (4036, 5395), (4316, 5045)]