19912680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55313}}^1$

素因数の和:55330

約数の個数: 48

約数和(自身を含む): 64717380

約数和(自身を除く): 44804700

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, 55313, 110626, 165939, 221252, 276565, 331878, 442504, 497817, 553130, 663756, 829695, 995634, 1106260, 1327512, 1659390, 1991268, 2212520, 2489085, 3318780, 3982536, 4978170, 6637560, 9956340, 19912680]

約数ペア:

[(1, 19912680), (2, 9956340), (3, 6637560), (4, 4978170), (5, 3982536), (6, 3318780), (8, 2489085), (9, 2212520), (10, 1991268), (12, 1659390), (15, 1327512), (18, 1106260), (20, 995634), (24, 829695), (30, 663756), (36, 553130), (40, 497817), (45, 442504), (60, 331878), (72, 276565), (90, 221252), (120, 165939), (180, 110626), (360, 55313)]