19815720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4463}}^1$

素因数の和:4514

約数の個数: 64

約数和(自身を含む): 61067520

約数和(自身を除く): 41251800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 4463, 8926, 13389, 17852, 22315, 26778, 35704, 44630, 53556, 66945, 89260, 107112, 133890, 165131, 178520, 267780, 330262, 495393, 535560, 660524, 825655, 990786, 1321048, 1651310, 1981572, 2476965, 3302620, 3963144, 4953930, 6605240, 9907860, 19815720]

約数ペア:

[(1, 19815720), (2, 9907860), (3, 6605240), (4, 4953930), (5, 3963144), (6, 3302620), (8, 2476965), (10, 1981572), (12, 1651310), (15, 1321048), (20, 990786), (24, 825655), (30, 660524), (37, 535560), (40, 495393), (60, 330262), (74, 267780), (111, 178520), (120, 165131), (148, 133890), (185, 107112), (222, 89260), (296, 66945), (370, 53556), (444, 44630), (555, 35704), (740, 26778), (888, 22315), (1110, 17852), (1480, 13389), (2220, 8926), (4440, 4463)]