81771776

素因数分解:

$2^8\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 171266760

約数和(自身を除く): 89494984

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 74, 89, 97, 128, 148, 178, 194, 256, 296, 356, 388, 592, 712, 776, 1184, 1424, 1552, 2368, 2848, 3104, 3293, 3589, 4736, 5696, 6208, 6586, 7178, 8633, 9472, 11392, 12416, 13172, 14356, 17266, 22784, 24832, 26344, 28712, 34532, 52688, 57424, 69064, 105376, 114848, 138128, 210752, 229696, 276256, 319421, 421504, 459392, 552512, 638842, 843008, 918784, 1105024, 1277684, 2210048, 2555368, 5110736, 10221472, 20442944, 40885888, 81771776]

約数ペア:

[(1, 81771776), (2, 40885888), (4, 20442944), (8, 10221472), (16, 5110736), (32, 2555368), (37, 2210048), (64, 1277684), (74, 1105024), (89, 918784), (97, 843008), (128, 638842), (148, 552512), (178, 459392), (194, 421504), (256, 319421), (296, 276256), (356, 229696), (388, 210752), (592, 138128), (712, 114848), (776, 105376), (1184, 69064), (1424, 57424), (1552, 52688), (2368, 34532), (2848, 28712), (3104, 26344), (3293, 24832), (3589, 22784), (4736, 17266), (5696, 14356), (6208, 13172), (6586, 12416), (7178, 11392), (8633, 9472)]