16839820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 36949248

約数和(自身を除く): 20109428

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 173, 310, 314, 346, 620, 628, 692, 785, 865, 1570, 1730, 3140, 3460, 4867, 5363, 9734, 10726, 19468, 21452, 24335, 26815, 27161, 48670, 53630, 54322, 97340, 107260, 108644, 135805, 271610, 543220, 841991, 1683982, 3367964, 4209955, 8419910, 16839820]

約数ペア:

[(1, 16839820), (2, 8419910), (4, 4209955), (5, 3367964), (10, 1683982), (20, 841991), (31, 543220), (62, 271610), (124, 135805), (155, 108644), (157, 107260), (173, 97340), (310, 54322), (314, 53630), (346, 48670), (620, 27161), (628, 26815), (692, 24335), (785, 21452), (865, 19468), (1570, 10726), (1730, 9734), (3140, 5363), (3460, 4867)]