280804940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{3407}}^1$

素因数の和:3746

約数の個数: 48

約数和(自身を含む): 637241472

約数和(自身を除く): 356436532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 317, 634, 1268, 1585, 3170, 3407, 4121, 6340, 6814, 8242, 13628, 16484, 17035, 20605, 34070, 41210, 44291, 68140, 82420, 88582, 177164, 221455, 442910, 885820, 1080019, 2160038, 4320076, 5400095, 10800190, 14040247, 21600380, 28080494, 56160988, 70201235, 140402470, 280804940]

約数ペア:

[(1, 280804940), (2, 140402470), (4, 70201235), (5, 56160988), (10, 28080494), (13, 21600380), (20, 14040247), (26, 10800190), (52, 5400095), (65, 4320076), (130, 2160038), (260, 1080019), (317, 885820), (634, 442910), (1268, 221455), (1585, 177164), (3170, 88582), (3407, 82420), (4121, 68140), (6340, 44291), (6814, 41210), (8242, 34070), (13628, 20605), (16484, 17035)]