666128

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:135

約数の個数: 40

約数和(自身を含む): 1428480

約数和(自身を除く): 762352

約数列:

[1, 2, 4, 8, 16, 17, 31, 34, 62, 68, 79, 124, 136, 158, 248, 272, 316, 496, 527, 632, 1054, 1264, 1343, 2108, 2449, 2686, 4216, 4898, 5372, 8432, 9796, 10744, 19592, 21488, 39184, 41633, 83266, 166532, 333064, 666128]

約数ペア:

[(1, 666128), (2, 333064), (4, 166532), (8, 83266), (16, 41633), (17, 39184), (31, 21488), (34, 19592), (62, 10744), (68, 9796), (79, 8432), (124, 5372), (136, 4898), (158, 4216), (248, 2686), (272, 2449), (316, 2108), (496, 1343), (527, 1264), (632, 1054)]