51637720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21163}}^1$

素因数の和:21235

約数の個数: 32

約数和(自身を含む): 118095120

約数和(自身を除く): 66457400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 21163, 42326, 84652, 105815, 169304, 211630, 423260, 846520, 1290943, 2581886, 5163772, 6454715, 10327544, 12909430, 25818860, 51637720]

約数ペア:

[(1, 51637720), (2, 25818860), (4, 12909430), (5, 10327544), (8, 6454715), (10, 5163772), (20, 2581886), (40, 1290943), (61, 846520), (122, 423260), (244, 211630), (305, 169304), (488, 105815), (610, 84652), (1220, 42326), (2440, 21163)]