20854912

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 45581760

約数和(自身を除く): 24726848

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 83, 104, 128, 151, 166, 208, 302, 332, 416, 604, 664, 832, 1079, 1208, 1328, 1664, 1963, 2158, 2416, 2656, 3926, 4316, 4832, 5312, 7852, 8632, 9664, 10624, 12533, 15704, 17264, 19328, 25066, 31408, 34528, 50132, 62816, 69056, 100264, 125632, 138112, 162929, 200528, 251264, 325858, 401056, 651716, 802112, 1303432, 1604224, 2606864, 5213728, 10427456, 20854912]

約数ペア:

[(1, 20854912), (2, 10427456), (4, 5213728), (8, 2606864), (13, 1604224), (16, 1303432), (26, 802112), (32, 651716), (52, 401056), (64, 325858), (83, 251264), (104, 200528), (128, 162929), (151, 138112), (166, 125632), (208, 100264), (302, 69056), (332, 62816), (416, 50132), (604, 34528), (664, 31408), (832, 25066), (1079, 19328), (1208, 17264), (1328, 15704), (1664, 12533), (1963, 10624), (2158, 9664), (2416, 8632), (2656, 7852), (3926, 5312), (4316, 4832)]