18861834620

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{947}}^1\times {\mathrm{1213}}^1$

素因数の和:2990

約数の個数: 48

約数和(自身を含む): 39732704928

約数和(自身を除く): 20870870308

約数列:

[1, 2, 4, 5, 10, 20, 821, 947, 1213, 1642, 1894, 2426, 3284, 3788, 4105, 4735, 4852, 6065, 8210, 9470, 12130, 16420, 18940, 24260, 777487, 995873, 1148711, 1554974, 1991746, 2297422, 3109948, 3887435, 3983492, 4594844, 4979365, 5743555, 7774870, 9958730, 11487110, 15549740, 19917460, 22974220, 943091731, 1886183462, 3772366924, 4715458655, 9430917310, 18861834620]

約数ペア:

[(1, 18861834620), (2, 9430917310), (4, 4715458655), (5, 3772366924), (10, 1886183462), (20, 943091731), (821, 22974220), (947, 19917460), (1213, 15549740), (1642, 11487110), (1894, 9958730), (2426, 7774870), (3284, 5743555), (3788, 4979365), (4105, 4594844), (4735, 3983492), (4852, 3887435), (6065, 3109948), (8210, 2297422), (9470, 1991746), (12130, 1554974), (16420, 1148711), (18940, 995873), (24260, 777487)]