9920020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{673}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 23099328

約数和(自身を除く): 13179308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 673, 737, 1340, 1346, 1474, 2692, 2948, 3365, 3685, 6730, 7370, 7403, 13460, 14740, 14806, 29612, 37015, 45091, 74030, 90182, 148060, 180364, 225455, 450910, 496001, 901820, 992002, 1984004, 2480005, 4960010, 9920020]

約数ペア:

[(1, 9920020), (2, 4960010), (4, 2480005), (5, 1984004), (10, 992002), (11, 901820), (20, 496001), (22, 450910), (44, 225455), (55, 180364), (67, 148060), (110, 90182), (134, 74030), (220, 45091), (268, 37015), (335, 29612), (670, 14806), (673, 14740), (737, 13460), (1340, 7403), (1346, 7370), (1474, 6730), (2692, 3685), (2948, 3365)]