21388608

素因数分解:

$2^6\times 3^2\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:612

約数の個数: 84

約数和(自身を含む): 62288928

約数和(自身を除く): 40900320

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 71, 72, 96, 142, 144, 192, 213, 284, 288, 426, 523, 568, 576, 639, 852, 1046, 1136, 1278, 1569, 1704, 2092, 2272, 2556, 3138, 3408, 4184, 4544, 4707, 5112, 6276, 6816, 8368, 9414, 10224, 12552, 13632, 16736, 18828, 20448, 25104, 33472, 37133, 37656, 40896, 50208, 74266, 75312, 100416, 111399, 148532, 150624, 222798, 297064, 301248, 334197, 445596, 594128, 668394, 891192, 1188256, 1336788, 1782384, 2376512, 2673576, 3564768, 5347152, 7129536, 10694304, 21388608]

約数ペア:

[(1, 21388608), (2, 10694304), (3, 7129536), (4, 5347152), (6, 3564768), (8, 2673576), (9, 2376512), (12, 1782384), (16, 1336788), (18, 1188256), (24, 891192), (32, 668394), (36, 594128), (48, 445596), (64, 334197), (71, 301248), (72, 297064), (96, 222798), (142, 150624), (144, 148532), (192, 111399), (213, 100416), (284, 75312), (288, 74266), (426, 50208), (523, 40896), (568, 37656), (576, 37133), (639, 33472), (852, 25104), (1046, 20448), (1136, 18828), (1278, 16736), (1569, 13632), (1704, 12552), (2092, 10224), (2272, 9414), (2556, 8368), (3138, 6816), (3408, 6276), (4184, 5112), (4544, 4707)]