21175418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{509}}^1$

素因数の和:614

約数の個数: 32

約数和(自身を含む): 36426240

約数和(自身を除く): 15250822

約数列:

[1, 2, 11, 22, 31, 61, 62, 122, 341, 509, 671, 682, 1018, 1342, 1891, 3782, 5599, 11198, 15779, 20801, 31049, 31558, 41602, 62098, 173569, 341539, 347138, 683078, 962519, 1925038, 10587709, 21175418]

約数ペア:

[(1, 21175418), (2, 10587709), (11, 1925038), (22, 962519), (31, 683078), (61, 347138), (62, 341539), (122, 173569), (341, 62098), (509, 41602), (671, 31558), (682, 31049), (1018, 20801), (1342, 15779), (1891, 11198), (3782, 5599)]