208570945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{821}}^1$

素因数の和:1017

約数の個数: 32

約数和(自身を含む): 284083200

約数和(自身を除く): 75512255

約数列:

[1, 5, 11, 31, 55, 149, 155, 341, 745, 821, 1639, 1705, 4105, 4619, 8195, 9031, 23095, 25451, 45155, 50809, 122329, 127255, 254045, 279961, 611645, 1345619, 1399805, 3792199, 6728095, 18960995, 41714189, 208570945]

約数ペア:

[(1, 208570945), (5, 41714189), (11, 18960995), (31, 6728095), (55, 3792199), (149, 1399805), (155, 1345619), (341, 611645), (745, 279961), (821, 254045), (1639, 127255), (1705, 122329), (4105, 50809), (4619, 45155), (8195, 25451), (9031, 23095)]