204980984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 427056000

約数和(自身を除く): 222075016

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 79, 104, 122, 158, 244, 316, 409, 488, 632, 793, 818, 1027, 1586, 1636, 2054, 3172, 3272, 4108, 4819, 5317, 6344, 8216, 9638, 10634, 19276, 21268, 24949, 32311, 38552, 42536, 49898, 62647, 64622, 99796, 125294, 129244, 199592, 250588, 258488, 324337, 420043, 501176, 648674, 840086, 1297348, 1680172, 1970971, 2594696, 3360344, 3941942, 7883884, 15767768, 25622623, 51245246, 102490492, 204980984]

約数ペア:

[(1, 204980984), (2, 102490492), (4, 51245246), (8, 25622623), (13, 15767768), (26, 7883884), (52, 3941942), (61, 3360344), (79, 2594696), (104, 1970971), (122, 1680172), (158, 1297348), (244, 840086), (316, 648674), (409, 501176), (488, 420043), (632, 324337), (793, 258488), (818, 250588), (1027, 199592), (1586, 129244), (1636, 125294), (2054, 99796), (3172, 64622), (3272, 62647), (4108, 49898), (4819, 42536), (5317, 38552), (6344, 32311), (8216, 24949), (9638, 21268), (10634, 19276)]