19878120

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55217}}^1$

素因数の和:55234

約数の個数: 48

約数和(自身を含む): 64605060

約数和(自身を除く): 44726940

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55217, 110434, 165651, 220868, 276085, 331302, 441736, 496953, 552170, 662604, 828255, 993906, 1104340, 1325208, 1656510, 1987812, 2208680, 2484765, 3313020, 3975624, 4969530, 6626040, 9939060, 19878120]

約数ペア:

[(1, 19878120), (2, 9939060), (3, 6626040), (4, 4969530), (5, 3975624), (6, 3313020), (8, 2484765), (9, 2208680), (10, 1987812), (12, 1656510), (15, 1325208), (18, 1104340), (20, 993906), (24, 828255), (30, 662604), (36, 552170), (40, 496953), (45, 441736), (60, 331302), (72, 276085), (90, 220868), (120, 165651), (180, 110434), (360, 55217)]