20970675

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 42266640

約数和(自身を除く): 21295965

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 37, 45, 55, 75, 99, 111, 165, 185, 225, 229, 275, 333, 407, 495, 555, 687, 825, 925, 1145, 1221, 1665, 2035, 2061, 2475, 2519, 2775, 3435, 3663, 5725, 6105, 7557, 8325, 8473, 10175, 10305, 12595, 17175, 18315, 22671, 25419, 30525, 37785, 42365, 51525, 62975, 76257, 91575, 93203, 113355, 127095, 188925, 211825, 279609, 381285, 466015, 566775, 635475, 838827, 1398045, 1906425, 2330075, 4194135, 6990225, 20970675]

約数ペア:

[(1, 20970675), (3, 6990225), (5, 4194135), (9, 2330075), (11, 1906425), (15, 1398045), (25, 838827), (33, 635475), (37, 566775), (45, 466015), (55, 381285), (75, 279609), (99, 211825), (111, 188925), (165, 127095), (185, 113355), (225, 93203), (229, 91575), (275, 76257), (333, 62975), (407, 51525), (495, 42365), (555, 37785), (687, 30525), (825, 25419), (925, 22671), (1145, 18315), (1221, 17175), (1665, 12595), (2035, 10305), (2061, 10175), (2475, 8473), (2519, 8325), (2775, 7557), (3435, 6105), (3663, 5725)]