20891820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15139}}^1$

素因数の和:15174

約数の個数: 48

約数和(自身を含む): 61044480

約数和(自身を除く): 40152660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15139, 30278, 45417, 60556, 75695, 90834, 151390, 181668, 227085, 302780, 348197, 454170, 696394, 908340, 1044591, 1392788, 1740985, 2089182, 3481970, 4178364, 5222955, 6963940, 10445910, 20891820]

約数ペア:

[(1, 20891820), (2, 10445910), (3, 6963940), (4, 5222955), (5, 4178364), (6, 3481970), (10, 2089182), (12, 1740985), (15, 1392788), (20, 1044591), (23, 908340), (30, 696394), (46, 454170), (60, 348197), (69, 302780), (92, 227085), (115, 181668), (138, 151390), (230, 90834), (276, 75695), (345, 60556), (460, 45417), (690, 30278), (1380, 15139)]