21297992

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{547}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 41560320

約数和(自身を除く): 20262328

約数列:

[1, 2, 4, 8, 31, 62, 124, 157, 248, 314, 547, 628, 1094, 1256, 2188, 4376, 4867, 9734, 16957, 19468, 33914, 38936, 67828, 85879, 135656, 171758, 343516, 687032, 2662249, 5324498, 10648996, 21297992]

約数ペア:

[(1, 21297992), (2, 10648996), (4, 5324498), (8, 2662249), (31, 687032), (62, 343516), (124, 171758), (157, 135656), (248, 85879), (314, 67828), (547, 38936), (628, 33914), (1094, 19468), (1256, 16957), (2188, 9734), (4376, 4867)]