21388140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3833}}^1$

素因数の和:3879

約数の個数: 72

約数和(自身を含む): 66987648

約数和(自身を除く): 45599508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3833, 5580, 7666, 11499, 15332, 19165, 22998, 34497, 38330, 45996, 57495, 68994, 76660, 114990, 118823, 137988, 172485, 229980, 237646, 344970, 356469, 475292, 594115, 689940, 712938, 1069407, 1188230, 1425876, 1782345, 2138814, 2376460, 3564690, 4277628, 5347035, 7129380, 10694070, 21388140]

約数ペア:

[(1, 21388140), (2, 10694070), (3, 7129380), (4, 5347035), (5, 4277628), (6, 3564690), (9, 2376460), (10, 2138814), (12, 1782345), (15, 1425876), (18, 1188230), (20, 1069407), (30, 712938), (31, 689940), (36, 594115), (45, 475292), (60, 356469), (62, 344970), (90, 237646), (93, 229980), (124, 172485), (155, 137988), (180, 118823), (186, 114990), (279, 76660), (310, 68994), (372, 57495), (465, 45996), (558, 38330), (620, 34497), (930, 22998), (1116, 19165), (1395, 15332), (1860, 11499), (2790, 7666), (3833, 5580)]