2491781680

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{510611}}^1$

素因数の和:510685

約数の個数: 40

約数和(自身を含む): 5888377584

約数和(自身を除く): 3396595904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 510611, 1021222, 2042444, 2553055, 4084888, 5106110, 8169776, 10212220, 20424440, 31147271, 40848880, 62294542, 124589084, 155736355, 249178168, 311472710, 498356336, 622945420, 1245890840, 2491781680]

約数ペア:

[(1, 2491781680), (2, 1245890840), (4, 622945420), (5, 498356336), (8, 311472710), (10, 249178168), (16, 155736355), (20, 124589084), (40, 62294542), (61, 40848880), (80, 31147271), (122, 20424440), (244, 10212220), (305, 8169776), (488, 5106110), (610, 4084888), (976, 2553055), (1220, 2042444), (2440, 1021222), (4880, 510611)]