81241520

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:762

約数の個数: 80

約数和(自身を含む): 200344320

約数和(自身を除く): 119102800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 67, 80, 92, 115, 134, 184, 230, 268, 335, 368, 460, 536, 659, 670, 920, 1072, 1318, 1340, 1541, 1840, 2636, 2680, 3082, 3295, 5272, 5360, 6164, 6590, 7705, 10544, 12328, 13180, 15157, 15410, 24656, 26360, 30314, 30820, 44153, 52720, 60628, 61640, 75785, 88306, 121256, 123280, 151570, 176612, 220765, 242512, 303140, 353224, 441530, 606280, 706448, 883060, 1015519, 1212560, 1766120, 2031038, 3532240, 4062076, 5077595, 8124152, 10155190, 16248304, 20310380, 40620760, 81241520]

約数ペア:

[(1, 81241520), (2, 40620760), (4, 20310380), (5, 16248304), (8, 10155190), (10, 8124152), (16, 5077595), (20, 4062076), (23, 3532240), (40, 2031038), (46, 1766120), (67, 1212560), (80, 1015519), (92, 883060), (115, 706448), (134, 606280), (184, 441530), (230, 353224), (268, 303140), (335, 242512), (368, 220765), (460, 176612), (536, 151570), (659, 123280), (670, 121256), (920, 88306), (1072, 75785), (1318, 61640), (1340, 60628), (1541, 52720), (1840, 44153), (2636, 30820), (2680, 30314), (3082, 26360), (3295, 24656), (5272, 15410), (5360, 15157), (6164, 13180), (6590, 12328), (7705, 10544)]