20090820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8167}}^1$

素因数の和:8220

約数の個数: 48

約数和(自身を含む): 57633408

約数和(自身を除く): 37542588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8167, 16334, 24501, 32668, 40835, 49002, 81670, 98004, 122505, 163340, 245010, 334847, 490020, 669694, 1004541, 1339388, 1674235, 2009082, 3348470, 4018164, 5022705, 6696940, 10045410, 20090820]

約数ペア:

[(1, 20090820), (2, 10045410), (3, 6696940), (4, 5022705), (5, 4018164), (6, 3348470), (10, 2009082), (12, 1674235), (15, 1339388), (20, 1004541), (30, 669694), (41, 490020), (60, 334847), (82, 245010), (123, 163340), (164, 122505), (205, 98004), (246, 81670), (410, 49002), (492, 40835), (615, 32668), (820, 24501), (1230, 16334), (2460, 8167)]