18841980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4423}}^1$

素因数の和:4506

約数の個数: 48

約数和(自身を含む): 53512704

約数和(自身を除く): 34670724

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4423, 8846, 13269, 17692, 22115, 26538, 44230, 53076, 66345, 88460, 132690, 265380, 314033, 628066, 942099, 1256132, 1570165, 1884198, 3140330, 3768396, 4710495, 6280660, 9420990, 18841980]

約数ペア:

[(1, 18841980), (2, 9420990), (3, 6280660), (4, 4710495), (5, 3768396), (6, 3140330), (10, 1884198), (12, 1570165), (15, 1256132), (20, 942099), (30, 628066), (60, 314033), (71, 265380), (142, 132690), (213, 88460), (284, 66345), (355, 53076), (426, 44230), (710, 26538), (852, 22115), (1065, 17692), (1420, 13269), (2130, 8846), (4260, 4423)]