208372220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20963}}^1$

素因数の和:21050

約数の個数: 48

約数和(自身を含む): 507161088

約数和(自身を除く): 298788868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 20963, 41926, 83852, 104815, 146741, 209630, 293482, 419260, 586964, 733705, 1467410, 1488373, 2934820, 2976746, 5953492, 7441865, 10418611, 14883730, 20837222, 29767460, 41674444, 52093055, 104186110, 208372220]

約数ペア:

[(1, 208372220), (2, 104186110), (4, 52093055), (5, 41674444), (7, 29767460), (10, 20837222), (14, 14883730), (20, 10418611), (28, 7441865), (35, 5953492), (70, 2976746), (71, 2934820), (140, 1488373), (142, 1467410), (284, 733705), (355, 586964), (497, 419260), (710, 293482), (994, 209630), (1420, 146741), (1988, 104815), (2485, 83852), (4970, 41926), (9940, 20963)]