81531984

素因数分解:

$2^4\times 3^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:548

約数の個数: 80

約数和(自身を含む): 219430400

約数和(自身を除く): 137898416

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 48, 62, 93, 124, 157, 186, 248, 314, 349, 372, 471, 496, 628, 698, 744, 942, 1047, 1256, 1396, 1488, 1884, 2094, 2512, 2792, 3768, 4188, 4867, 5584, 7536, 8376, 9734, 10819, 14601, 16752, 19468, 21638, 29202, 32457, 38936, 43276, 54793, 58404, 64914, 77872, 86552, 109586, 116808, 129828, 164379, 173104, 219172, 233616, 259656, 328758, 438344, 519312, 657516, 876688, 1315032, 1698583, 2630064, 3397166, 5095749, 6794332, 10191498, 13588664, 20382996, 27177328, 40765992, 81531984]

約数ペア:

[(1, 81531984), (2, 40765992), (3, 27177328), (4, 20382996), (6, 13588664), (8, 10191498), (12, 6794332), (16, 5095749), (24, 3397166), (31, 2630064), (48, 1698583), (62, 1315032), (93, 876688), (124, 657516), (157, 519312), (186, 438344), (248, 328758), (314, 259656), (349, 233616), (372, 219172), (471, 173104), (496, 164379), (628, 129828), (698, 116808), (744, 109586), (942, 86552), (1047, 77872), (1256, 64914), (1396, 58404), (1488, 54793), (1884, 43276), (2094, 38936), (2512, 32457), (2792, 29202), (3768, 21638), (4188, 19468), (4867, 16752), (5584, 14601), (7536, 10819), (8376, 9734)]