20413328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:312

約数の個数: 80

約数和(自身を含む): 47246976

約数和(自身を除く): 26833648

約数列:

[1, 2, 4, 8, 13, 16, 17, 23, 26, 34, 46, 52, 68, 92, 104, 136, 184, 208, 221, 251, 272, 299, 368, 391, 442, 502, 598, 782, 884, 1004, 1196, 1564, 1768, 2008, 2392, 3128, 3263, 3536, 4016, 4267, 4784, 5083, 5773, 6256, 6526, 8534, 10166, 11546, 13052, 17068, 20332, 23092, 26104, 34136, 40664, 46184, 52208, 55471, 68272, 75049, 81328, 92368, 98141, 110942, 150098, 196282, 221884, 300196, 392564, 443768, 600392, 785128, 887536, 1200784, 1275833, 1570256, 2551666, 5103332, 10206664, 20413328]

約数ペア:

[(1, 20413328), (2, 10206664), (4, 5103332), (8, 2551666), (13, 1570256), (16, 1275833), (17, 1200784), (23, 887536), (26, 785128), (34, 600392), (46, 443768), (52, 392564), (68, 300196), (92, 221884), (104, 196282), (136, 150098), (184, 110942), (208, 98141), (221, 92368), (251, 81328), (272, 75049), (299, 68272), (368, 55471), (391, 52208), (442, 46184), (502, 40664), (598, 34136), (782, 26104), (884, 23092), (1004, 20332), (1196, 17068), (1564, 13052), (1768, 11546), (2008, 10166), (2392, 8534), (3128, 6526), (3263, 6256), (3536, 5773), (4016, 5083), (4267, 4784)]