399992944

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{383}}^1\times {\mathrm{5021}}^1$

素因数の和:5425

約数の個数: 40

約数和(自身を含む): 836946432

約数和(自身を除く): 436953488

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 383, 766, 1532, 3064, 4979, 5021, 6128, 9958, 10042, 19916, 20084, 39832, 40168, 65273, 79664, 80336, 130546, 261092, 522184, 1044368, 1923043, 3846086, 7692172, 15384344, 24999559, 30768688, 49999118, 99998236, 199996472, 399992944]

約数ペア:

[(1, 399992944), (2, 199996472), (4, 99998236), (8, 49999118), (13, 30768688), (16, 24999559), (26, 15384344), (52, 7692172), (104, 3846086), (208, 1923043), (383, 1044368), (766, 522184), (1532, 261092), (3064, 130546), (4979, 80336), (5021, 79664), (6128, 65273), (9958, 40168), (10042, 39832), (19916, 20084)]