20391250

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1483}}^1$

素因数の和:1516

約数の個数: 40

約数和(自身を含む): 41724144

約数和(自身を除く): 21332894

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1375, 1483, 2750, 2966, 6875, 7415, 13750, 14830, 16313, 32626, 37075, 74150, 81565, 163130, 185375, 370750, 407825, 815650, 926875, 1853750, 2039125, 4078250, 10195625, 20391250]

約数ペア:

[(1, 20391250), (2, 10195625), (5, 4078250), (10, 2039125), (11, 1853750), (22, 926875), (25, 815650), (50, 407825), (55, 370750), (110, 185375), (125, 163130), (250, 81565), (275, 74150), (550, 37075), (625, 32626), (1250, 16313), (1375, 14830), (1483, 13750), (2750, 7415), (2966, 6875)]