19574480

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:456

約数の個数: 80

約数和(自身を含む): 49617360

約数和(自身を除く): 30042880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 37, 40, 68, 74, 80, 85, 136, 148, 170, 185, 272, 296, 340, 370, 389, 592, 629, 680, 740, 778, 1258, 1360, 1480, 1556, 1945, 2516, 2960, 3112, 3145, 3890, 5032, 6224, 6290, 6613, 7780, 10064, 12580, 13226, 14393, 15560, 25160, 26452, 28786, 31120, 33065, 50320, 52904, 57572, 66130, 71965, 105808, 115144, 132260, 143930, 230288, 244681, 264520, 287860, 489362, 529040, 575720, 978724, 1151440, 1223405, 1957448, 2446810, 3914896, 4893620, 9787240, 19574480]

約数ペア:

[(1, 19574480), (2, 9787240), (4, 4893620), (5, 3914896), (8, 2446810), (10, 1957448), (16, 1223405), (17, 1151440), (20, 978724), (34, 575720), (37, 529040), (40, 489362), (68, 287860), (74, 264520), (80, 244681), (85, 230288), (136, 143930), (148, 132260), (170, 115144), (185, 105808), (272, 71965), (296, 66130), (340, 57572), (370, 52904), (389, 50320), (592, 33065), (629, 31120), (680, 28786), (740, 26452), (778, 25160), (1258, 15560), (1360, 14393), (1480, 13226), (1556, 12580), (1945, 10064), (2516, 7780), (2960, 6613), (3112, 6290), (3145, 6224), (3890, 5032)]