81559120

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:340

約数の個数: 80

約数和(自身を含む): 195737472

約数和(自身を除く): 114178352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 83, 142, 166, 173, 284, 332, 346, 355, 415, 568, 664, 692, 710, 830, 865, 1136, 1328, 1384, 1420, 1660, 1730, 2768, 2840, 3320, 3460, 5680, 5893, 6640, 6920, 11786, 12283, 13840, 14359, 23572, 24566, 28718, 29465, 47144, 49132, 57436, 58930, 61415, 71795, 94288, 98264, 114872, 117860, 122830, 143590, 196528, 229744, 235720, 245660, 287180, 471440, 491320, 574360, 982640, 1019489, 1148720, 2038978, 4077956, 5097445, 8155912, 10194890, 16311824, 20389780, 40779560, 81559120]

約数ペア:

[(1, 81559120), (2, 40779560), (4, 20389780), (5, 16311824), (8, 10194890), (10, 8155912), (16, 5097445), (20, 4077956), (40, 2038978), (71, 1148720), (80, 1019489), (83, 982640), (142, 574360), (166, 491320), (173, 471440), (284, 287180), (332, 245660), (346, 235720), (355, 229744), (415, 196528), (568, 143590), (664, 122830), (692, 117860), (710, 114872), (830, 98264), (865, 94288), (1136, 71795), (1328, 61415), (1384, 58930), (1420, 57436), (1660, 49132), (1730, 47144), (2768, 29465), (2840, 28718), (3320, 24566), (3460, 23572), (5680, 14359), (5893, 13840), (6640, 12283), (6920, 11786)]