21540990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 53851392

約数和(自身を除く): 32310402

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 82, 83, 123, 166, 205, 211, 246, 249, 410, 415, 422, 498, 615, 633, 830, 1055, 1230, 1245, 1266, 2110, 2490, 3165, 3403, 6330, 6806, 8651, 10209, 17015, 17302, 17513, 20418, 25953, 34030, 35026, 43255, 51045, 51906, 52539, 86510, 87565, 102090, 105078, 129765, 175130, 259530, 262695, 525390, 718033, 1436066, 2154099, 3590165, 4308198, 7180330, 10770495, 21540990]

約数ペア:

[(1, 21540990), (2, 10770495), (3, 7180330), (5, 4308198), (6, 3590165), (10, 2154099), (15, 1436066), (30, 718033), (41, 525390), (82, 262695), (83, 259530), (123, 175130), (166, 129765), (205, 105078), (211, 102090), (246, 87565), (249, 86510), (410, 52539), (415, 51906), (422, 51045), (498, 43255), (615, 35026), (633, 34030), (830, 25953), (1055, 20418), (1230, 17513), (1245, 17302), (1266, 17015), (2110, 10209), (2490, 8651), (3165, 6806), (3403, 6330)]