81991140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17747}}^1$

素因数の和:17777

約数の個数: 96

約数和(自身を含む): 286239744

約数和(自身を除く): 204248604

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, 17747, 35494, 53241, 70988, 88735, 106482, 124229, 177470, 195217, 212964, 248458, 266205, 354940, 372687, 390434, 496916, 532410, 585651, 621145, 745374, 780868, 976085, 1064820, 1171302, 1242290, 1366519, 1490748, 1863435, 1952170, 2342604, 2484580, 2733038, 2928255, 3726870, 3904340, 4099557, 5466076, 5856510, 6832595, 7453740, 8199114, 11713020, 13665190, 16398228, 20497785, 27330380, 40995570, 81991140]

約数ペア:

[(1, 81991140), (2, 40995570), (3, 27330380), (4, 20497785), (5, 16398228), (6, 13665190), (7, 11713020), (10, 8199114), (11, 7453740), (12, 6832595), (14, 5856510), (15, 5466076), (20, 4099557), (21, 3904340), (22, 3726870), (28, 2928255), (30, 2733038), (33, 2484580), (35, 2342604), (42, 1952170), (44, 1863435), (55, 1490748), (60, 1366519), (66, 1242290), (70, 1171302), (77, 1064820), (84, 976085), (105, 780868), (110, 745374), (132, 621145), (140, 585651), (154, 532410), (165, 496916), (210, 390434), (220, 372687), (231, 354940), (308, 266205), (330, 248458), (385, 212964), (420, 195217), (462, 177470), (660, 124229), (770, 106482), (924, 88735), (1155, 70988), (1540, 53241), (2310, 35494), (4620, 17747)]