20000240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19231}}^1$

素因数の和:19257

約数の個数: 40

約数和(自身を含む): 50080128

約数和(自身を除く): 30079888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19231, 38462, 76924, 96155, 153848, 192310, 250003, 307696, 384620, 500006, 769240, 1000012, 1250015, 1538480, 2000024, 2500030, 4000048, 5000060, 10000120, 20000240]

約数ペア:

[(1, 20000240), (2, 10000120), (4, 5000060), (5, 4000048), (8, 2500030), (10, 2000024), (13, 1538480), (16, 1250015), (20, 1000012), (26, 769240), (40, 500006), (52, 384620), (65, 307696), (80, 250003), (104, 192310), (130, 153848), (208, 96155), (260, 76924), (520, 38462), (1040, 19231)]