78889371280

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1\times {\mathrm{12941}}^1$

素因数の和:13556

約数の個数: 80

約数和(自身を含む): 184883510448

約数和(自身を除く): 105994139168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 421, 724, 842, 905, 1448, 1684, 1810, 2105, 2896, 3368, 3620, 4210, 6736, 7240, 8420, 12941, 14480, 16840, 25882, 33680, 51764, 64705, 76201, 103528, 129410, 152402, 207056, 258820, 304804, 381005, 517640, 609608, 762010, 1035280, 1219216, 1524020, 2342321, 3048040, 4684642, 5448161, 6096080, 9369284, 10896322, 11711605, 18738568, 21792644, 23423210, 27240805, 37477136, 43585288, 46846420, 54481610, 87170576, 93692840, 108963220, 187385680, 217926440, 435852880, 986117141, 1972234282, 3944468564, 4930585705, 7888937128, 9861171410, 15777874256, 19722342820, 39444685640, 78889371280]

約数ペア:

[(1, 78889371280), (2, 39444685640), (4, 19722342820), (5, 15777874256), (8, 9861171410), (10, 7888937128), (16, 4930585705), (20, 3944468564), (40, 1972234282), (80, 986117141), (181, 435852880), (362, 217926440), (421, 187385680), (724, 108963220), (842, 93692840), (905, 87170576), (1448, 54481610), (1684, 46846420), (1810, 43585288), (2105, 37477136), (2896, 27240805), (3368, 23423210), (3620, 21792644), (4210, 18738568), (6736, 11711605), (7240, 10896322), (8420, 9369284), (12941, 6096080), (14480, 5448161), (16840, 4684642), (25882, 3048040), (33680, 2342321), (51764, 1524020), (64705, 1219216), (76201, 1035280), (103528, 762010), (129410, 609608), (152402, 517640), (207056, 381005), (258820, 304804)]