21806560

素因数分解:

$2^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1867}}^1$

素因数の和:1955

約数の個数: 48

約数和(自身を含む): 52251696

約数和(自身を除く): 30445136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 73, 80, 146, 160, 292, 365, 584, 730, 1168, 1460, 1867, 2336, 2920, 3734, 5840, 7468, 9335, 11680, 14936, 18670, 29872, 37340, 59744, 74680, 136291, 149360, 272582, 298720, 545164, 681455, 1090328, 1362910, 2180656, 2725820, 4361312, 5451640, 10903280, 21806560]

約数ペア:

[(1, 21806560), (2, 10903280), (4, 5451640), (5, 4361312), (8, 2725820), (10, 2180656), (16, 1362910), (20, 1090328), (32, 681455), (40, 545164), (73, 298720), (80, 272582), (146, 149360), (160, 136291), (292, 74680), (365, 59744), (584, 37340), (730, 29872), (1168, 18670), (1460, 14936), (1867, 11680), (2336, 9335), (2920, 7468), (3734, 5840)]