19960780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6199}}^1$

素因数の和:6238

約数の個数: 48

約数和(自身を含む): 49996800

約数和(自身を除く): 30036020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6199, 12398, 24796, 30995, 43393, 61990, 86786, 123980, 142577, 173572, 216965, 285154, 433930, 570308, 712885, 867860, 998039, 1425770, 1996078, 2851540, 3992156, 4990195, 9980390, 19960780]

約数ペア:

[(1, 19960780), (2, 9980390), (4, 4990195), (5, 3992156), (7, 2851540), (10, 1996078), (14, 1425770), (20, 998039), (23, 867860), (28, 712885), (35, 570308), (46, 433930), (70, 285154), (92, 216965), (115, 173572), (140, 142577), (161, 123980), (230, 86786), (322, 61990), (460, 43393), (644, 30995), (805, 24796), (1610, 12398), (3220, 6199)]