20021250

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:325

約数の個数: 80

約数和(自身を含む): 52858080

約数和(自身を除く): 32836830

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 25, 30, 38, 50, 57, 75, 95, 114, 125, 150, 190, 250, 281, 285, 375, 475, 562, 570, 625, 750, 843, 950, 1250, 1405, 1425, 1686, 1875, 2375, 2810, 2850, 3750, 4215, 4750, 5339, 7025, 7125, 8430, 10678, 11875, 14050, 14250, 16017, 21075, 23750, 26695, 32034, 35125, 35625, 42150, 53390, 70250, 71250, 80085, 105375, 133475, 160170, 175625, 210750, 266950, 351250, 400425, 526875, 667375, 800850, 1053750, 1334750, 2002125, 3336875, 4004250, 6673750, 10010625, 20021250]

約数ペア:

[(1, 20021250), (2, 10010625), (3, 6673750), (5, 4004250), (6, 3336875), (10, 2002125), (15, 1334750), (19, 1053750), (25, 800850), (30, 667375), (38, 526875), (50, 400425), (57, 351250), (75, 266950), (95, 210750), (114, 175625), (125, 160170), (150, 133475), (190, 105375), (250, 80085), (281, 71250), (285, 70250), (375, 53390), (475, 42150), (562, 35625), (570, 35125), (625, 32034), (750, 26695), (843, 23750), (950, 21075), (1250, 16017), (1405, 14250), (1425, 14050), (1686, 11875), (1875, 10678), (2375, 8430), (2810, 7125), (2850, 7025), (3750, 5339), (4215, 4750)]