20680140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26513}}^1$

素因数の和:26538

約数の個数: 48

約数和(自身を含む): 62360928

約数和(自身を除く): 41680788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26513, 53026, 79539, 106052, 132565, 159078, 265130, 318156, 344669, 397695, 530260, 689338, 795390, 1034007, 1378676, 1590780, 1723345, 2068014, 3446690, 4136028, 5170035, 6893380, 10340070, 20680140]

約数ペア:

[(1, 20680140), (2, 10340070), (3, 6893380), (4, 5170035), (5, 4136028), (6, 3446690), (10, 2068014), (12, 1723345), (13, 1590780), (15, 1378676), (20, 1034007), (26, 795390), (30, 689338), (39, 530260), (52, 397695), (60, 344669), (65, 318156), (78, 265130), (130, 159078), (156, 132565), (195, 106052), (260, 79539), (390, 53026), (780, 26513)]