201720788680

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{769}}^1\times {\mathrm{97879}}^1$

素因数の和:98726

約数の個数: 64

約数和(自身を含む): 461249712000

約数和(自身を除く): 259528923320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 769, 1340, 1538, 2680, 3076, 3845, 6152, 7690, 15380, 30760, 51523, 97879, 103046, 195758, 206092, 257615, 391516, 412184, 489395, 515230, 783032, 978790, 1030460, 1957580, 2060920, 3915160, 6557893, 13115786, 26231572, 32789465, 52463144, 65578930, 75268951, 131157860, 150537902, 262315720, 301075804, 376344755, 602151608, 752689510, 1505379020, 3010758040, 5043019717, 10086039434, 20172078868, 25215098585, 40344157736, 50430197170, 100860394340, 201720788680]

約数ペア:

[(1, 201720788680), (2, 100860394340), (4, 50430197170), (5, 40344157736), (8, 25215098585), (10, 20172078868), (20, 10086039434), (40, 5043019717), (67, 3010758040), (134, 1505379020), (268, 752689510), (335, 602151608), (536, 376344755), (670, 301075804), (769, 262315720), (1340, 150537902), (1538, 131157860), (2680, 75268951), (3076, 65578930), (3845, 52463144), (6152, 32789465), (7690, 26231572), (15380, 13115786), (30760, 6557893), (51523, 3915160), (97879, 2060920), (103046, 1957580), (195758, 1030460), (206092, 978790), (257615, 783032), (391516, 515230), (412184, 489395)]