1268145920

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12541}}^1$

素因数の和:12641

約数の個数: 72

約数和(自身を含む): 3076301760

約数和(自身を除く): 1808155840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 632, 640, 790, 1264, 1280, 1580, 2528, 3160, 5056, 6320, 10112, 12541, 12640, 20224, 25082, 25280, 50164, 50560, 62705, 100328, 101120, 125410, 200656, 250820, 401312, 501640, 802624, 990739, 1003280, 1605248, 1981478, 2006560, 3210496, 3962956, 4013120, 4953695, 7925912, 8026240, 9907390, 15851824, 16052480, 19814780, 31703648, 39629560, 63407296, 79259120, 126814592, 158518240, 253629184, 317036480, 634072960, 1268145920]

約数ペア:

[(1, 1268145920), (2, 634072960), (4, 317036480), (5, 253629184), (8, 158518240), (10, 126814592), (16, 79259120), (20, 63407296), (32, 39629560), (40, 31703648), (64, 19814780), (79, 16052480), (80, 15851824), (128, 9907390), (158, 8026240), (160, 7925912), (256, 4953695), (316, 4013120), (320, 3962956), (395, 3210496), (632, 2006560), (640, 1981478), (790, 1605248), (1264, 1003280), (1280, 990739), (1580, 802624), (2528, 501640), (3160, 401312), (5056, 250820), (6320, 200656), (10112, 125410), (12541, 101120), (12640, 100328), (20224, 62705), (25082, 50560), (25280, 50164)]