20919724

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{619}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 24077396

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 71, 119, 142, 238, 284, 476, 497, 619, 994, 1207, 1238, 1988, 2414, 2476, 4333, 4828, 8449, 8666, 10523, 16898, 17332, 21046, 33796, 42092, 43949, 73661, 87898, 147322, 175796, 294644, 307643, 615286, 747133, 1230572, 1494266, 2988532, 5229931, 10459862, 20919724]

約数ペア:

[(1, 20919724), (2, 10459862), (4, 5229931), (7, 2988532), (14, 1494266), (17, 1230572), (28, 747133), (34, 615286), (68, 307643), (71, 294644), (119, 175796), (142, 147322), (238, 87898), (284, 73661), (476, 43949), (497, 42092), (619, 33796), (994, 21046), (1207, 17332), (1238, 16898), (1988, 10523), (2414, 8666), (2476, 8449), (4333, 4828)]