21492952

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 46620000

約数和(自身を除く): 25127048

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 73, 76, 104, 146, 149, 152, 247, 292, 298, 494, 584, 596, 949, 988, 1192, 1387, 1898, 1937, 1976, 2774, 2831, 3796, 3874, 5548, 5662, 7592, 7748, 10877, 11096, 11324, 15496, 18031, 21754, 22648, 36062, 36803, 43508, 72124, 73606, 87016, 141401, 144248, 147212, 206663, 282802, 294424, 413326, 565604, 826652, 1131208, 1653304, 2686619, 5373238, 10746476, 21492952]

約数ペア:

[(1, 21492952), (2, 10746476), (4, 5373238), (8, 2686619), (13, 1653304), (19, 1131208), (26, 826652), (38, 565604), (52, 413326), (73, 294424), (76, 282802), (104, 206663), (146, 147212), (149, 144248), (152, 141401), (247, 87016), (292, 73606), (298, 72124), (494, 43508), (584, 36803), (596, 36062), (949, 22648), (988, 21754), (1192, 18031), (1387, 15496), (1898, 11324), (1937, 11096), (1976, 10877), (2774, 7748), (2831, 7592), (3796, 5662), (3874, 5548)]