21385130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{919}}^1$

素因数の和:1118

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 20346070

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 179, 358, 895, 919, 1790, 1838, 2327, 4595, 4654, 9190, 11635, 11947, 23270, 23894, 59735, 119470, 164501, 329002, 822505, 1645010, 2138513, 4277026, 10692565, 21385130]

約数ペア:

[(1, 21385130), (2, 10692565), (5, 4277026), (10, 2138513), (13, 1645010), (26, 822505), (65, 329002), (130, 164501), (179, 119470), (358, 59735), (895, 23894), (919, 23270), (1790, 11947), (1838, 11635), (2327, 9190), (4595, 4654)]