13113440

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1999}}^1$

素因数の和:2055

約数の個数: 48

約数和(自身を含む): 31752000

約数和(自身を除く): 18638560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 1999, 3280, 3998, 6560, 7996, 9995, 15992, 19990, 31984, 39980, 63968, 79960, 81959, 159920, 163918, 319840, 327836, 409795, 655672, 819590, 1311344, 1639180, 2622688, 3278360, 6556720, 13113440]

約数ペア:

[(1, 13113440), (2, 6556720), (4, 3278360), (5, 2622688), (8, 1639180), (10, 1311344), (16, 819590), (20, 655672), (32, 409795), (40, 327836), (41, 319840), (80, 163918), (82, 159920), (160, 81959), (164, 79960), (205, 63968), (328, 39980), (410, 31984), (656, 19990), (820, 15992), (1312, 9995), (1640, 7996), (1999, 6560), (3280, 3998)]