291201988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:194

約数の個数: 144

約数和(自身を含む): 692842752

約数和(自身を除く): 401640764

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 37, 44, 46, 74, 77, 92, 101, 121, 148, 154, 161, 202, 242, 253, 259, 308, 322, 404, 407, 484, 506, 518, 644, 707, 814, 847, 851, 1012, 1036, 1111, 1414, 1628, 1694, 1702, 1771, 2222, 2323, 2783, 2828, 2849, 3388, 3404, 3542, 3737, 4444, 4477, 4646, 5566, 5698, 5957, 7084, 7474, 7777, 8954, 9292, 9361, 11132, 11396, 11914, 12221, 14948, 15554, 16261, 17908, 18722, 19481, 23828, 24442, 25553, 26159, 31108, 31339, 32522, 37444, 38962, 41107, 48884, 51106, 52318, 62678, 65044, 65527, 77924, 82214, 85547, 85951, 102212, 102971, 104636, 125356, 131054, 164428, 171094, 171902, 178871, 205942, 262108, 281083, 287749, 342188, 343804, 357742, 411884, 452177, 562166, 575498, 601657, 715484, 720797, 904354, 945461, 1124332, 1150996, 1203314, 1441594, 1808708, 1890922, 1967581, 2406628, 2883188, 3165239, 3781844, 3935162, 6330478, 6618227, 7870324, 10400071, 12660956, 13236454, 20800142, 26472908, 41600284, 72800497, 145600994, 291201988]

約数ペア:

[(1, 291201988), (2, 145600994), (4, 72800497), (7, 41600284), (11, 26472908), (14, 20800142), (22, 13236454), (23, 12660956), (28, 10400071), (37, 7870324), (44, 6618227), (46, 6330478), (74, 3935162), (77, 3781844), (92, 3165239), (101, 2883188), (121, 2406628), (148, 1967581), (154, 1890922), (161, 1808708), (202, 1441594), (242, 1203314), (253, 1150996), (259, 1124332), (308, 945461), (322, 904354), (404, 720797), (407, 715484), (484, 601657), (506, 575498), (518, 562166), (644, 452177), (707, 411884), (814, 357742), (847, 343804), (851, 342188), (1012, 287749), (1036, 281083), (1111, 262108), (1414, 205942), (1628, 178871), (1694, 171902), (1702, 171094), (1771, 164428), (2222, 131054), (2323, 125356), (2783, 104636), (2828, 102971), (2849, 102212), (3388, 85951), (3404, 85547), (3542, 82214), (3737, 77924), (4444, 65527), (4477, 65044), (4646, 62678), (5566, 52318), (5698, 51106), (5957, 48884), (7084, 41107), (7474, 38962), (7777, 37444), (8954, 32522), (9292, 31339), (9361, 31108), (11132, 26159), (11396, 25553), (11914, 24442), (12221, 23828), (14948, 19481), (15554, 18722), (16261, 17908)]