20191556875

素因数分解:

$5^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{65003}}^1$

素因数の和:65101

約数の個数: 40

約数和(自身を含む): 29242439424

約数和(自身を除く): 9050882549

約数列:

[1, 5, 7, 25, 35, 71, 125, 175, 355, 497, 625, 875, 1775, 2485, 4375, 8875, 12425, 44375, 62125, 65003, 310625, 325015, 455021, 1625075, 2275105, 4615213, 8125375, 11375525, 23076065, 32306491, 40626875, 56877625, 115380325, 161532455, 284388125, 576901625, 807662275, 2884508125, 4038311375, 20191556875]

約数ペア:

[(1, 20191556875), (5, 4038311375), (7, 2884508125), (25, 807662275), (35, 576901625), (71, 284388125), (125, 161532455), (175, 115380325), (355, 56877625), (497, 40626875), (625, 32306491), (875, 23076065), (1775, 11375525), (2485, 8125375), (4375, 4615213), (8875, 2275105), (12425, 1625075), (44375, 455021), (62125, 325015), (65003, 310625)]