20089870900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1\times {\mathrm{1217}}^1$

素因数の和:1634

約数の個数: 144

約数和(自身を含む): 48843748800

約数和(自身を除く): 28753877900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 43, 44, 50, 55, 86, 100, 110, 172, 215, 220, 275, 349, 430, 473, 550, 698, 860, 946, 1075, 1100, 1217, 1396, 1745, 1892, 2150, 2365, 2434, 3490, 3839, 4300, 4730, 4868, 6085, 6980, 7678, 8725, 9460, 11825, 12170, 13387, 15007, 15356, 17450, 19195, 23650, 24340, 26774, 30014, 30425, 34900, 38390, 47300, 52331, 53548, 60028, 60850, 66935, 75035, 76780, 95975, 104662, 121700, 133870, 150070, 165077, 191950, 209324, 261655, 267740, 300140, 330154, 334675, 375175, 383900, 424733, 523310, 575641, 660308, 669350, 750350, 825385, 849466, 1046620, 1151282, 1308275, 1338700, 1500700, 1650770, 1698932, 2123665, 2302564, 2616550, 2878205, 3301540, 4126925, 4247330, 4672063, 5233100, 5756410, 8253850, 8494660, 9344126, 10618325, 11512820, 14391025, 16507700, 18263519, 18688252, 21236650, 23360315, 28782050, 36527038, 42473300, 46720630, 57564100, 73054076, 91317595, 93441260, 116801575, 182635190, 200898709, 233603150, 365270380, 401797418, 456587975, 467206300, 803594836, 913175950, 1004493545, 1826351900, 2008987090, 4017974180, 5022467725, 10044935450, 20089870900]

約数ペア:

[(1, 20089870900), (2, 10044935450), (4, 5022467725), (5, 4017974180), (10, 2008987090), (11, 1826351900), (20, 1004493545), (22, 913175950), (25, 803594836), (43, 467206300), (44, 456587975), (50, 401797418), (55, 365270380), (86, 233603150), (100, 200898709), (110, 182635190), (172, 116801575), (215, 93441260), (220, 91317595), (275, 73054076), (349, 57564100), (430, 46720630), (473, 42473300), (550, 36527038), (698, 28782050), (860, 23360315), (946, 21236650), (1075, 18688252), (1100, 18263519), (1217, 16507700), (1396, 14391025), (1745, 11512820), (1892, 10618325), (2150, 9344126), (2365, 8494660), (2434, 8253850), (3490, 5756410), (3839, 5233100), (4300, 4672063), (4730, 4247330), (4868, 4126925), (6085, 3301540), (6980, 2878205), (7678, 2616550), (8725, 2302564), (9460, 2123665), (11825, 1698932), (12170, 1650770), (13387, 1500700), (15007, 1338700), (15356, 1308275), (17450, 1151282), (19195, 1046620), (23650, 849466), (24340, 825385), (26774, 750350), (30014, 669350), (30425, 660308), (34900, 575641), (38390, 523310), (47300, 424733), (52331, 383900), (53548, 375175), (60028, 334675), (60850, 330154), (66935, 300140), (75035, 267740), (76780, 261655), (95975, 209324), (104662, 191950), (121700, 165077), (133870, 150070)]