81855480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{13921}}^1$

素因数の和:13949

約数の個数: 96

約数和(自身を含む): 285679440

約数和(自身を除く): 203823960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 5880, 13921, 27842, 41763, 55684, 69605, 83526, 97447, 111368, 139210, 167052, 194894, 208815, 278420, 292341, 334104, 389788, 417630, 487235, 556840, 584682, 682129, 779576, 835260, 974470, 1169364, 1364258, 1461705, 1670520, 1948940, 2046387, 2338728, 2728516, 2923410, 3410645, 3897880, 4092774, 5457032, 5846820, 6821290, 8185548, 10231935, 11693640, 13642580, 16371096, 20463870, 27285160, 40927740, 81855480]

約数ペア:

[(1, 81855480), (2, 40927740), (3, 27285160), (4, 20463870), (5, 16371096), (6, 13642580), (7, 11693640), (8, 10231935), (10, 8185548), (12, 6821290), (14, 5846820), (15, 5457032), (20, 4092774), (21, 3897880), (24, 3410645), (28, 2923410), (30, 2728516), (35, 2338728), (40, 2046387), (42, 1948940), (49, 1670520), (56, 1461705), (60, 1364258), (70, 1169364), (84, 974470), (98, 835260), (105, 779576), (120, 682129), (140, 584682), (147, 556840), (168, 487235), (196, 417630), (210, 389788), (245, 334104), (280, 292341), (294, 278420), (392, 208815), (420, 194894), (490, 167052), (588, 139210), (735, 111368), (840, 97447), (980, 83526), (1176, 69605), (1470, 55684), (1960, 41763), (2940, 27842), (5880, 13921)]