19956720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1697}}^1$

素因数の和:1727

約数の個数: 120

約数和(自身を含む): 72008784

約数和(自身を除く): 52052064

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1697, 1960, 2352, 2940, 3394, 3920, 5091, 5880, 6788, 8485, 10182, 11760, 11879, 13576, 16970, 20364, 23758, 25455, 27152, 33940, 35637, 40728, 47516, 50910, 59395, 67880, 71274, 81456, 83153, 95032, 101820, 118790, 135760, 142548, 166306, 178185, 190064, 203640, 237580, 249459, 285096, 332612, 356370, 407280, 415765, 475160, 498918, 570192, 665224, 712740, 831530, 950320, 997836, 1247295, 1330448, 1425480, 1663060, 1995672, 2494590, 2850960, 3326120, 3991344, 4989180, 6652240, 9978360, 19956720]

約数ペア:

[(1, 19956720), (2, 9978360), (3, 6652240), (4, 4989180), (5, 3991344), (6, 3326120), (7, 2850960), (8, 2494590), (10, 1995672), (12, 1663060), (14, 1425480), (15, 1330448), (16, 1247295), (20, 997836), (21, 950320), (24, 831530), (28, 712740), (30, 665224), (35, 570192), (40, 498918), (42, 475160), (48, 415765), (49, 407280), (56, 356370), (60, 332612), (70, 285096), (80, 249459), (84, 237580), (98, 203640), (105, 190064), (112, 178185), (120, 166306), (140, 142548), (147, 135760), (168, 118790), (196, 101820), (210, 95032), (240, 83153), (245, 81456), (280, 71274), (294, 67880), (336, 59395), (392, 50910), (420, 47516), (490, 40728), (560, 35637), (588, 33940), (735, 27152), (784, 25455), (840, 23758), (980, 20364), (1176, 16970), (1470, 13576), (1680, 11879), (1697, 11760), (1960, 10182), (2352, 8485), (2940, 6788), (3394, 5880), (3920, 5091)]