18964972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 37904832

約数和(自身を除く): 18939860

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 92, 101, 157, 202, 299, 314, 404, 598, 628, 1196, 1313, 2041, 2323, 2626, 3611, 4082, 4646, 5252, 7222, 8164, 9292, 14444, 15857, 30199, 31714, 46943, 60398, 63428, 93886, 120796, 187772, 206141, 364711, 412282, 729422, 824564, 1458844, 4741243, 9482486, 18964972]

約数ペア:

[(1, 18964972), (2, 9482486), (4, 4741243), (13, 1458844), (23, 824564), (26, 729422), (46, 412282), (52, 364711), (92, 206141), (101, 187772), (157, 120796), (202, 93886), (299, 63428), (314, 60398), (404, 46943), (598, 31714), (628, 30199), (1196, 15857), (1313, 14444), (2041, 9292), (2323, 8164), (2626, 7222), (3611, 5252), (4082, 4646)]