21558784

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 80

約数和(自身を含む): 48121920

約数和(自身を除く): 26563136

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 41, 52, 64, 79, 82, 104, 128, 158, 164, 208, 256, 316, 328, 416, 512, 533, 632, 656, 832, 1027, 1066, 1264, 1312, 1664, 2054, 2132, 2528, 2624, 3239, 3328, 4108, 4264, 5056, 5248, 6478, 6656, 8216, 8528, 10112, 10496, 12956, 16432, 17056, 20224, 20992, 25912, 32864, 34112, 40448, 42107, 51824, 65728, 68224, 84214, 103648, 131456, 136448, 168428, 207296, 262912, 272896, 336856, 414592, 525824, 673712, 829184, 1347424, 1658368, 2694848, 5389696, 10779392, 21558784]

約数ペア:

[(1, 21558784), (2, 10779392), (4, 5389696), (8, 2694848), (13, 1658368), (16, 1347424), (26, 829184), (32, 673712), (41, 525824), (52, 414592), (64, 336856), (79, 272896), (82, 262912), (104, 207296), (128, 168428), (158, 136448), (164, 131456), (208, 103648), (256, 84214), (316, 68224), (328, 65728), (416, 51824), (512, 42107), (533, 40448), (632, 34112), (656, 32864), (832, 25912), (1027, 20992), (1066, 20224), (1264, 17056), (1312, 16432), (1664, 12956), (2054, 10496), (2132, 10112), (2528, 8528), (2624, 8216), (3239, 6656), (3328, 6478), (4108, 5248), (4264, 5056)]