20726128

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3313}}^1$

素因数の和:3361

約数の個数: 40

約数和(自身を含む): 44381088

約数和(自身を除く): 23654960

約数列:

[1, 2, 4, 8, 16, 17, 23, 34, 46, 68, 92, 136, 184, 272, 368, 391, 782, 1564, 3128, 3313, 6256, 6626, 13252, 26504, 53008, 56321, 76199, 112642, 152398, 225284, 304796, 450568, 609592, 901136, 1219184, 1295383, 2590766, 5181532, 10363064, 20726128]

約数ペア:

[(1, 20726128), (2, 10363064), (4, 5181532), (8, 2590766), (16, 1295383), (17, 1219184), (23, 901136), (34, 609592), (46, 450568), (68, 304796), (92, 225284), (136, 152398), (184, 112642), (272, 76199), (368, 56321), (391, 53008), (782, 26504), (1564, 13252), (3128, 6626), (3313, 6256)]