279939140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{8219}}^1$

素因数の和:8372

約数の個数: 48

約数和(自身を含む): 638003520

約数和(自身を除く): 358064380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 524, 655, 1310, 1703, 2620, 3406, 6812, 8219, 8515, 16438, 17030, 32876, 34060, 41095, 82190, 106847, 164380, 213694, 427388, 534235, 1068470, 1076689, 2136940, 2153378, 4306756, 5383445, 10766890, 13996957, 21533780, 27993914, 55987828, 69984785, 139969570, 279939140]

約数ペア:

[(1, 279939140), (2, 139969570), (4, 69984785), (5, 55987828), (10, 27993914), (13, 21533780), (20, 13996957), (26, 10766890), (52, 5383445), (65, 4306756), (130, 2153378), (131, 2136940), (260, 1076689), (262, 1068470), (524, 534235), (655, 427388), (1310, 213694), (1703, 164380), (2620, 106847), (3406, 82190), (6812, 41095), (8219, 34060), (8515, 32876), (16438, 17030)]