25326940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{457}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 56784672

約数和(自身を除く): 31457732

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 326, 340, 457, 652, 815, 914, 1630, 1828, 2285, 2771, 3260, 4570, 5542, 7769, 9140, 11084, 13855, 15538, 27710, 31076, 38845, 55420, 74491, 77690, 148982, 155380, 297964, 372455, 744910, 1266347, 1489820, 2532694, 5065388, 6331735, 12663470, 25326940]

約数ペア:

[(1, 25326940), (2, 12663470), (4, 6331735), (5, 5065388), (10, 2532694), (17, 1489820), (20, 1266347), (34, 744910), (68, 372455), (85, 297964), (163, 155380), (170, 148982), (326, 77690), (340, 74491), (457, 55420), (652, 38845), (815, 31076), (914, 27710), (1630, 15538), (1828, 13855), (2285, 11084), (2771, 9140), (3260, 7769), (4570, 5542)]