81236540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:180

約数の個数: 192

約数和(自身を含む): 235146240

約数和(自身を除く): 153909700

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 29, 34, 35, 44, 55, 58, 68, 70, 77, 85, 107, 110, 116, 119, 140, 145, 154, 170, 187, 203, 214, 220, 238, 290, 308, 319, 340, 374, 385, 406, 428, 476, 493, 535, 580, 595, 638, 748, 749, 770, 812, 935, 986, 1015, 1070, 1177, 1190, 1276, 1309, 1498, 1540, 1595, 1819, 1870, 1972, 2030, 2140, 2233, 2354, 2380, 2465, 2618, 2996, 3103, 3190, 3451, 3638, 3740, 3745, 4060, 4466, 4708, 4930, 5236, 5423, 5885, 6206, 6380, 6545, 6902, 7276, 7490, 8239, 8932, 9095, 9860, 10846, 11165, 11770, 12412, 12733, 13090, 13804, 14980, 15515, 16478, 17255, 18190, 20009, 21692, 21721, 22330, 23540, 25466, 26180, 27115, 31030, 32956, 34133, 34510, 36380, 37961, 40018, 41195, 43442, 44660, 50932, 52751, 54230, 62060, 63665, 68266, 69020, 75922, 80036, 82390, 86884, 100045, 105502, 108460, 108605, 127330, 136532, 140063, 151844, 164780, 170665, 189805, 200090, 211004, 217210, 238931, 254660, 263755, 280126, 341330, 369257, 379610, 400180, 434420, 477862, 527510, 560252, 580261, 682660, 700315, 738514, 759220, 955724, 1055020, 1160522, 1194655, 1400630, 1477028, 1846285, 2321044, 2389310, 2801260, 2901305, 3692570, 4061827, 4778620, 5802610, 7385140, 8123654, 11605220, 16247308, 20309135, 40618270, 81236540]

約数ペア:

[(1, 81236540), (2, 40618270), (4, 20309135), (5, 16247308), (7, 11605220), (10, 8123654), (11, 7385140), (14, 5802610), (17, 4778620), (20, 4061827), (22, 3692570), (28, 2901305), (29, 2801260), (34, 2389310), (35, 2321044), (44, 1846285), (55, 1477028), (58, 1400630), (68, 1194655), (70, 1160522), (77, 1055020), (85, 955724), (107, 759220), (110, 738514), (116, 700315), (119, 682660), (140, 580261), (145, 560252), (154, 527510), (170, 477862), (187, 434420), (203, 400180), (214, 379610), (220, 369257), (238, 341330), (290, 280126), (308, 263755), (319, 254660), (340, 238931), (374, 217210), (385, 211004), (406, 200090), (428, 189805), (476, 170665), (493, 164780), (535, 151844), (580, 140063), (595, 136532), (638, 127330), (748, 108605), (749, 108460), (770, 105502), (812, 100045), (935, 86884), (986, 82390), (1015, 80036), (1070, 75922), (1177, 69020), (1190, 68266), (1276, 63665), (1309, 62060), (1498, 54230), (1540, 52751), (1595, 50932), (1819, 44660), (1870, 43442), (1972, 41195), (2030, 40018), (2140, 37961), (2233, 36380), (2354, 34510), (2380, 34133), (2465, 32956), (2618, 31030), (2996, 27115), (3103, 26180), (3190, 25466), (3451, 23540), (3638, 22330), (3740, 21721), (3745, 21692), (4060, 20009), (4466, 18190), (4708, 17255), (4930, 16478), (5236, 15515), (5423, 14980), (5885, 13804), (6206, 13090), (6380, 12733), (6545, 12412), (6902, 11770), (7276, 11165), (7490, 10846), (8239, 9860), (8932, 9095)]