19885980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1223}}^1$

素因数の和:1506

約数の個数: 48

約数和(自身を含む): 55931904

約数和(自身を除く): 36045924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 271, 542, 813, 1084, 1223, 1355, 1626, 2446, 2710, 3252, 3669, 4065, 4892, 5420, 6115, 7338, 8130, 12230, 14676, 16260, 18345, 24460, 36690, 73380, 331433, 662866, 994299, 1325732, 1657165, 1988598, 3314330, 3977196, 4971495, 6628660, 9942990, 19885980]

約数ペア:

[(1, 19885980), (2, 9942990), (3, 6628660), (4, 4971495), (5, 3977196), (6, 3314330), (10, 1988598), (12, 1657165), (15, 1325732), (20, 994299), (30, 662866), (60, 331433), (271, 73380), (542, 36690), (813, 24460), (1084, 18345), (1223, 16260), (1355, 14676), (1626, 12230), (2446, 8130), (2710, 7338), (3252, 6115), (3669, 5420), (4065, 4892)]