21913120

素因数分解:

$2^5\times 5^1\times {\mathrm{151}}^1\times {\mathrm{907}}^1$

素因数の和:1073

約数の個数: 48

約数和(自身を含む): 52170048

約数和(自身を除く): 30256928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 151, 160, 302, 604, 755, 907, 1208, 1510, 1814, 2416, 3020, 3628, 4535, 4832, 6040, 7256, 9070, 12080, 14512, 18140, 24160, 29024, 36280, 72560, 136957, 145120, 273914, 547828, 684785, 1095656, 1369570, 2191312, 2739140, 4382624, 5478280, 10956560, 21913120]

約数ペア:

[(1, 21913120), (2, 10956560), (4, 5478280), (5, 4382624), (8, 2739140), (10, 2191312), (16, 1369570), (20, 1095656), (32, 684785), (40, 547828), (80, 273914), (151, 145120), (160, 136957), (302, 72560), (604, 36280), (755, 29024), (907, 24160), (1208, 18140), (1510, 14512), (1814, 12080), (2416, 9070), (3020, 7256), (3628, 6040), (4535, 4832)]