642798

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:129

約数の個数: 48

約数和(自身を含む): 1559376

約数和(自身を除く): 916578

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 41, 67, 78, 82, 117, 123, 134, 201, 234, 246, 369, 402, 533, 603, 738, 871, 1066, 1206, 1599, 1742, 2613, 2747, 3198, 4797, 5226, 5494, 7839, 8241, 9594, 15678, 16482, 24723, 35711, 49446, 71422, 107133, 214266, 321399, 642798]

約数ペア:

[(1, 642798), (2, 321399), (3, 214266), (6, 107133), (9, 71422), (13, 49446), (18, 35711), (26, 24723), (39, 16482), (41, 15678), (67, 9594), (78, 8241), (82, 7839), (117, 5494), (123, 5226), (134, 4797), (201, 3198), (234, 2747), (246, 2613), (369, 1742), (402, 1599), (533, 1206), (603, 1066), (738, 871)]