81907980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17729}}^1$

素因数の和:17759

約数の個数: 96

約数和(自身を含む): 285949440

約数和(自身を除く): 204041460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 132, 140, 154, 165, 210, 220, 231, 308, 330, 385, 420, 462, 660, 770, 924, 1155, 1540, 2310, 4620, 17729, 35458, 53187, 70916, 88645, 106374, 124103, 177290, 195019, 212748, 248206, 265935, 354580, 372309, 390038, 496412, 531870, 585057, 620515, 744618, 780076, 975095, 1063740, 1170114, 1241030, 1365133, 1489236, 1861545, 1950190, 2340228, 2482060, 2730266, 2925285, 3723090, 3900380, 4095399, 5460532, 5850570, 6825665, 7446180, 8190798, 11701140, 13651330, 16381596, 20476995, 27302660, 40953990, 81907980]

約数ペア:

[(1, 81907980), (2, 40953990), (3, 27302660), (4, 20476995), (5, 16381596), (6, 13651330), (7, 11701140), (10, 8190798), (11, 7446180), (12, 6825665), (14, 5850570), (15, 5460532), (20, 4095399), (21, 3900380), (22, 3723090), (28, 2925285), (30, 2730266), (33, 2482060), (35, 2340228), (42, 1950190), (44, 1861545), (55, 1489236), (60, 1365133), (66, 1241030), (70, 1170114), (77, 1063740), (84, 975095), (105, 780076), (110, 744618), (132, 620515), (140, 585057), (154, 531870), (165, 496412), (210, 390038), (220, 372309), (231, 354580), (308, 265935), (330, 248206), (385, 212748), (420, 195019), (462, 177290), (660, 124103), (770, 106374), (924, 88645), (1155, 70916), (1540, 53187), (2310, 35458), (4620, 17729)]