1311440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1$

素因数の和:136

約数の個数: 60

約数和(自身を含む): 3335724

約数和(自身を除く): 2024284

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 97, 104, 130, 169, 194, 208, 260, 338, 388, 485, 520, 676, 776, 845, 970, 1040, 1261, 1352, 1552, 1690, 1940, 2522, 2704, 3380, 3880, 5044, 6305, 6760, 7760, 10088, 12610, 13520, 16393, 20176, 25220, 32786, 50440, 65572, 81965, 100880, 131144, 163930, 262288, 327860, 655720, 1311440]

約数ペア:

[(1, 1311440), (2, 655720), (4, 327860), (5, 262288), (8, 163930), (10, 131144), (13, 100880), (16, 81965), (20, 65572), (26, 50440), (40, 32786), (52, 25220), (65, 20176), (80, 16393), (97, 13520), (104, 12610), (130, 10088), (169, 7760), (194, 6760), (208, 6305), (260, 5044), (338, 3880), (388, 3380), (485, 2704), (520, 2522), (676, 1940), (776, 1690), (845, 1552), (970, 1352), (1040, 1261)]