21120256

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 46799424

約数和(自身を除く): 25679168

約数列:

[1, 2, 4, 8, 16, 17, 23, 32, 34, 46, 64, 68, 92, 128, 136, 184, 211, 256, 272, 368, 391, 422, 544, 736, 782, 844, 1088, 1472, 1564, 1688, 2176, 2944, 3128, 3376, 3587, 4352, 4853, 5888, 6256, 6752, 7174, 9706, 12512, 13504, 14348, 19412, 25024, 27008, 28696, 38824, 50048, 54016, 57392, 77648, 82501, 100096, 114784, 155296, 165002, 229568, 310592, 330004, 459136, 621184, 660008, 918272, 1242368, 1320016, 2640032, 5280064, 10560128, 21120256]

約数ペア:

[(1, 21120256), (2, 10560128), (4, 5280064), (8, 2640032), (16, 1320016), (17, 1242368), (23, 918272), (32, 660008), (34, 621184), (46, 459136), (64, 330004), (68, 310592), (92, 229568), (128, 165002), (136, 155296), (184, 114784), (211, 100096), (256, 82501), (272, 77648), (368, 57392), (391, 54016), (422, 50048), (544, 38824), (736, 28696), (782, 27008), (844, 25024), (1088, 19412), (1472, 14348), (1564, 13504), (1688, 12512), (2176, 9706), (2944, 7174), (3128, 6752), (3376, 6256), (3587, 5888), (4352, 4853)]