640454688

素因数分解:

$2^5\times 3^5\times {\mathrm{23}}^1\times {\mathrm{3581}}^1$

素因数の和:3629

約数の個数: 144

約数和(自身を含む): 1971418176

約数和(自身を除く): 1330963488

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 27, 32, 36, 46, 48, 54, 69, 72, 81, 92, 96, 108, 138, 144, 162, 184, 207, 216, 243, 276, 288, 324, 368, 414, 432, 486, 552, 621, 648, 736, 828, 864, 972, 1104, 1242, 1296, 1656, 1863, 1944, 2208, 2484, 2592, 3312, 3581, 3726, 3888, 4968, 5589, 6624, 7162, 7452, 7776, 9936, 10743, 11178, 14324, 14904, 19872, 21486, 22356, 28648, 29808, 32229, 42972, 44712, 57296, 59616, 64458, 82363, 85944, 89424, 96687, 114592, 128916, 164726, 171888, 178848, 193374, 247089, 257832, 290061, 329452, 343776, 386748, 494178, 515664, 580122, 658904, 741267, 773496, 870183, 988356, 1031328, 1160244, 1317808, 1482534, 1546992, 1740366, 1976712, 2223801, 2320488, 2635616, 2965068, 3093984, 3480732, 3953424, 4447602, 4640976, 5930136, 6671403, 6961464, 7906848, 8895204, 9281952, 11860272, 13342806, 13922928, 17790408, 20014209, 23720544, 26685612, 27845856, 35580816, 40028418, 53371224, 71161632, 80056836, 106742448, 160113672, 213484896, 320227344, 640454688]

約数ペア:

[(1, 640454688), (2, 320227344), (3, 213484896), (4, 160113672), (6, 106742448), (8, 80056836), (9, 71161632), (12, 53371224), (16, 40028418), (18, 35580816), (23, 27845856), (24, 26685612), (27, 23720544), (32, 20014209), (36, 17790408), (46, 13922928), (48, 13342806), (54, 11860272), (69, 9281952), (72, 8895204), (81, 7906848), (92, 6961464), (96, 6671403), (108, 5930136), (138, 4640976), (144, 4447602), (162, 3953424), (184, 3480732), (207, 3093984), (216, 2965068), (243, 2635616), (276, 2320488), (288, 2223801), (324, 1976712), (368, 1740366), (414, 1546992), (432, 1482534), (486, 1317808), (552, 1160244), (621, 1031328), (648, 988356), (736, 870183), (828, 773496), (864, 741267), (972, 658904), (1104, 580122), (1242, 515664), (1296, 494178), (1656, 386748), (1863, 343776), (1944, 329452), (2208, 290061), (2484, 257832), (2592, 247089), (3312, 193374), (3581, 178848), (3726, 171888), (3888, 164726), (4968, 128916), (5589, 114592), (6624, 96687), (7162, 89424), (7452, 85944), (7776, 82363), (9936, 64458), (10743, 59616), (11178, 57296), (14324, 44712), (14904, 42972), (19872, 32229), (21486, 29808), (22356, 28648)]