20213776825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{227}}^1\times {\mathrm{1789}}^1$

素因数の和:2218

約数の個数: 48

約数和(自身を含む): 27631356480

約数和(自身を除く): 7417579655

約数列:

[1, 5, 11, 25, 55, 181, 227, 275, 905, 1135, 1789, 1991, 2497, 4525, 5675, 8945, 9955, 12485, 19679, 41087, 44725, 49775, 62425, 98395, 205435, 323809, 406103, 451957, 491975, 1027175, 1619045, 2030515, 2259785, 3561899, 4467133, 8095225, 10152575, 11298925, 17809495, 22335665, 73504643, 89047475, 111678325, 367523215, 808551073, 1837616075, 4042755365, 20213776825]

約数ペア:

[(1, 20213776825), (5, 4042755365), (11, 1837616075), (25, 808551073), (55, 367523215), (181, 111678325), (227, 89047475), (275, 73504643), (905, 22335665), (1135, 17809495), (1789, 11298925), (1991, 10152575), (2497, 8095225), (4525, 4467133), (5675, 3561899), (8945, 2259785), (9955, 2030515), (12485, 1619045), (19679, 1027175), (41087, 491975), (44725, 451957), (49775, 406103), (62425, 323809), (98395, 205435)]