21638580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2753}}^1$

素因数の和:2896

約数の個数: 48

約数和(自身を含む): 61072704

約数和(自身を除く): 39434124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 131, 262, 393, 524, 655, 786, 1310, 1572, 1965, 2620, 2753, 3930, 5506, 7860, 8259, 11012, 13765, 16518, 27530, 33036, 41295, 55060, 82590, 165180, 360643, 721286, 1081929, 1442572, 1803215, 2163858, 3606430, 4327716, 5409645, 7212860, 10819290, 21638580]

約数ペア:

[(1, 21638580), (2, 10819290), (3, 7212860), (4, 5409645), (5, 4327716), (6, 3606430), (10, 2163858), (12, 1803215), (15, 1442572), (20, 1081929), (30, 721286), (60, 360643), (131, 165180), (262, 82590), (393, 55060), (524, 41295), (655, 33036), (786, 27530), (1310, 16518), (1572, 13765), (1965, 11012), (2620, 8259), (2753, 7860), (3930, 5506)]