219626840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{90011}}^1$

素因数の和:90083

約数の個数: 32

約数和(自身を含む): 502266960

約数和(自身を除く): 282640120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 90011, 180022, 360044, 450055, 720088, 900110, 1800220, 3600440, 5490671, 10981342, 21962684, 27453355, 43925368, 54906710, 109813420, 219626840]

約数ペア:

[(1, 219626840), (2, 109813420), (4, 54906710), (5, 43925368), (8, 27453355), (10, 21962684), (20, 10981342), (40, 5490671), (61, 3600440), (122, 1800220), (244, 900110), (305, 720088), (488, 450055), (610, 360044), (1220, 180022), (2440, 90011)]