81249760

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16381}}^1$

素因数の和:16427

約数の個数: 48

約数和(自身を含む): 198156672

約数和(自身を除く): 116906912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 16381, 32762, 65524, 81905, 131048, 163810, 262096, 327620, 507811, 524192, 655240, 1015622, 1310480, 2031244, 2539055, 2620960, 4062488, 5078110, 8124976, 10156220, 16249952, 20312440, 40624880, 81249760]

約数ペア:

[(1, 81249760), (2, 40624880), (4, 20312440), (5, 16249952), (8, 10156220), (10, 8124976), (16, 5078110), (20, 4062488), (31, 2620960), (32, 2539055), (40, 2031244), (62, 1310480), (80, 1015622), (124, 655240), (155, 524192), (160, 507811), (248, 327620), (310, 262096), (496, 163810), (620, 131048), (992, 81905), (1240, 65524), (2480, 32762), (4960, 16381)]