91878260

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{727}}^1$

素因数の和:896

約数の個数: 48

約数和(自身を含む): 198132480

約数和(自身を除く): 106254220

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 710, 727, 890, 1420, 1454, 1780, 2908, 3635, 6319, 7270, 12638, 14540, 25276, 31595, 51617, 63190, 64703, 103234, 126380, 129406, 206468, 258085, 258812, 323515, 516170, 647030, 1032340, 1294060, 4593913, 9187826, 18375652, 22969565, 45939130, 91878260]

約数ペア:

[(1, 91878260), (2, 45939130), (4, 22969565), (5, 18375652), (10, 9187826), (20, 4593913), (71, 1294060), (89, 1032340), (142, 647030), (178, 516170), (284, 323515), (355, 258812), (356, 258085), (445, 206468), (710, 129406), (727, 126380), (890, 103234), (1420, 64703), (1454, 63190), (1780, 51617), (2908, 31595), (3635, 25276), (6319, 14540), (7270, 12638)]