19472420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1451}}^1$

素因数の和:1532

約数の個数: 48

約数和(自身を含む): 45372096

約数和(自身を除く): 25899676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 1451, 2684, 2902, 3355, 5804, 6710, 7255, 13420, 14510, 15961, 29020, 31922, 63844, 79805, 88511, 159610, 177022, 319220, 354044, 442555, 885110, 973621, 1770220, 1947242, 3894484, 4868105, 9736210, 19472420]

約数ペア:

[(1, 19472420), (2, 9736210), (4, 4868105), (5, 3894484), (10, 1947242), (11, 1770220), (20, 973621), (22, 885110), (44, 442555), (55, 354044), (61, 319220), (110, 177022), (122, 159610), (220, 88511), (244, 79805), (305, 63844), (610, 31922), (671, 29020), (1220, 15961), (1342, 14510), (1451, 13420), (2684, 7255), (2902, 6710), (3355, 5804)]