278172100

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:469

約数の個数: 72

約数和(自身を含む): 617460480

約数和(自身を除く): 339288380

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 113, 206, 226, 239, 412, 452, 478, 515, 565, 956, 1030, 1130, 1195, 2060, 2260, 2390, 2575, 2825, 4780, 5150, 5650, 5975, 10300, 11300, 11639, 11950, 23278, 23900, 24617, 27007, 46556, 49234, 54014, 58195, 98468, 108028, 116390, 123085, 135035, 232780, 246170, 270070, 290975, 492340, 540140, 581950, 615425, 675175, 1163900, 1230850, 1350350, 2461700, 2700700, 2781721, 5563442, 11126884, 13908605, 27817210, 55634420, 69543025, 139086050, 278172100]

約数ペア:

[(1, 278172100), (2, 139086050), (4, 69543025), (5, 55634420), (10, 27817210), (20, 13908605), (25, 11126884), (50, 5563442), (100, 2781721), (103, 2700700), (113, 2461700), (206, 1350350), (226, 1230850), (239, 1163900), (412, 675175), (452, 615425), (478, 581950), (515, 540140), (565, 492340), (956, 290975), (1030, 270070), (1130, 246170), (1195, 232780), (2060, 135035), (2260, 123085), (2390, 116390), (2575, 108028), (2825, 98468), (4780, 58195), (5150, 54014), (5650, 49234), (5975, 46556), (10300, 27007), (11300, 24617), (11639, 23900), (11950, 23278)]