81471720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:248

約数の個数: 192

約数和(自身を含む): 278853120

約数和(自身を除く): 197381400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 55, 60, 62, 66, 88, 93, 110, 120, 121, 124, 132, 155, 165, 181, 186, 220, 242, 248, 264, 310, 330, 341, 362, 363, 372, 440, 465, 484, 543, 605, 620, 660, 682, 724, 726, 744, 905, 930, 968, 1023, 1086, 1210, 1240, 1320, 1364, 1448, 1452, 1705, 1810, 1815, 1860, 1991, 2046, 2172, 2420, 2715, 2728, 2904, 3410, 3620, 3630, 3720, 3751, 3982, 4092, 4344, 4840, 5115, 5430, 5611, 5973, 6820, 7240, 7260, 7502, 7964, 8184, 9955, 10230, 10860, 11222, 11253, 11946, 13640, 14520, 15004, 15928, 16833, 18755, 19910, 20460, 21720, 21901, 22444, 22506, 23892, 28055, 29865, 30008, 33666, 37510, 39820, 40920, 43802, 44888, 45012, 47784, 56110, 56265, 59730, 61721, 65703, 67332, 75020, 79640, 84165, 87604, 90024, 109505, 112220, 112530, 119460, 123442, 131406, 134664, 150040, 168330, 175208, 185163, 219010, 224440, 225060, 238920, 246884, 262812, 308605, 328515, 336660, 370326, 438020, 450120, 493768, 525624, 617210, 657030, 673320, 678931, 740652, 876040, 925815, 1234420, 1314060, 1357862, 1481304, 1851630, 2036793, 2468840, 2628120, 2715724, 3394655, 3703260, 4073586, 5431448, 6789310, 7406520, 8147172, 10183965, 13578620, 16294344, 20367930, 27157240, 40735860, 81471720]

約数ペア:

[(1, 81471720), (2, 40735860), (3, 27157240), (4, 20367930), (5, 16294344), (6, 13578620), (8, 10183965), (10, 8147172), (11, 7406520), (12, 6789310), (15, 5431448), (20, 4073586), (22, 3703260), (24, 3394655), (30, 2715724), (31, 2628120), (33, 2468840), (40, 2036793), (44, 1851630), (55, 1481304), (60, 1357862), (62, 1314060), (66, 1234420), (88, 925815), (93, 876040), (110, 740652), (120, 678931), (121, 673320), (124, 657030), (132, 617210), (155, 525624), (165, 493768), (181, 450120), (186, 438020), (220, 370326), (242, 336660), (248, 328515), (264, 308605), (310, 262812), (330, 246884), (341, 238920), (362, 225060), (363, 224440), (372, 219010), (440, 185163), (465, 175208), (484, 168330), (543, 150040), (605, 134664), (620, 131406), (660, 123442), (682, 119460), (724, 112530), (726, 112220), (744, 109505), (905, 90024), (930, 87604), (968, 84165), (1023, 79640), (1086, 75020), (1210, 67332), (1240, 65703), (1320, 61721), (1364, 59730), (1448, 56265), (1452, 56110), (1705, 47784), (1810, 45012), (1815, 44888), (1860, 43802), (1991, 40920), (2046, 39820), (2172, 37510), (2420, 33666), (2715, 30008), (2728, 29865), (2904, 28055), (3410, 23892), (3620, 22506), (3630, 22444), (3720, 21901), (3751, 21720), (3982, 20460), (4092, 19910), (4344, 18755), (4840, 16833), (5115, 15928), (5430, 15004), (5611, 14520), (5973, 13640), (6820, 11946), (7240, 11253), (7260, 11222), (7502, 10860), (7964, 10230), (8184, 9955)]