20161567280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13264189}}^1$

素因数の和:13264221

約数の個数: 40

約数和(自身を含む): 49342786800

約数和(自身を除く): 29181219520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13264189, 26528378, 53056756, 66320945, 106113512, 132641890, 212227024, 252019591, 265283780, 504039182, 530567560, 1008078364, 1061135120, 1260097955, 2016156728, 2520195910, 4032313456, 5040391820, 10080783640, 20161567280]

約数ペア:

[(1, 20161567280), (2, 10080783640), (4, 5040391820), (5, 4032313456), (8, 2520195910), (10, 2016156728), (16, 1260097955), (19, 1061135120), (20, 1008078364), (38, 530567560), (40, 504039182), (76, 265283780), (80, 252019591), (95, 212227024), (152, 132641890), (190, 106113512), (304, 66320945), (380, 53056756), (760, 26528378), (1520, 13264189)]