1921000400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{436591}}^1$

素因数の和:436620

約数の個数: 60

約数和(自身を含む): 5034778944

約数和(自身を除く): 3113778544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 436591, 873182, 1746364, 2182955, 3492728, 4365910, 4802501, 6985456, 8731820, 9605002, 10914775, 17463640, 19210004, 21829550, 24012505, 34927280, 38420008, 43659100, 48025010, 76840016, 87318200, 96050020, 120062525, 174636400, 192100040, 240125050, 384200080, 480250100, 960500200, 1921000400]

約数ペア:

[(1, 1921000400), (2, 960500200), (4, 480250100), (5, 384200080), (8, 240125050), (10, 192100040), (11, 174636400), (16, 120062525), (20, 96050020), (22, 87318200), (25, 76840016), (40, 48025010), (44, 43659100), (50, 38420008), (55, 34927280), (80, 24012505), (88, 21829550), (100, 19210004), (110, 17463640), (176, 10914775), (200, 9605002), (220, 8731820), (275, 6985456), (400, 4802501), (440, 4365910), (550, 3492728), (880, 2182955), (1100, 1746364), (2200, 873182), (4400, 436591)]