898492220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{20411}}^1$

素因数の和:20522

約数の個数: 48

約数和(自身を含む): 1975228416

約数和(自身を除く): 1076736196

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1420, 2201, 4402, 8804, 11005, 20411, 22010, 40822, 44020, 81644, 102055, 204110, 408220, 632741, 1265482, 1449181, 2530964, 2898362, 3163705, 5796724, 6327410, 7245905, 12654820, 14491810, 28983620, 44924611, 89849222, 179698444, 224623055, 449246110, 898492220]

約数ペア:

[(1, 898492220), (2, 449246110), (4, 224623055), (5, 179698444), (10, 89849222), (20, 44924611), (31, 28983620), (62, 14491810), (71, 12654820), (124, 7245905), (142, 6327410), (155, 5796724), (284, 3163705), (310, 2898362), (355, 2530964), (620, 1449181), (710, 1265482), (1420, 632741), (2201, 408220), (4402, 204110), (8804, 102055), (11005, 81644), (20411, 44020), (22010, 40822)]