199955890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{645019}}^1$

素因数の和:645057

約数の個数: 16

約数和(自身を含む): 371531520

約数和(自身を除く): 171575630

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 645019, 1290038, 3225095, 6450190, 19995589, 39991178, 99977945, 199955890]

約数ペア:

[(1, 199955890), (2, 99977945), (5, 39991178), (10, 19995589), (31, 6450190), (62, 3225095), (155, 1290038), (310, 645019)]