20753880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{797}}^1$

素因数の和:849

約数の個数: 128

約数和(自身を含む): 73543680

約数和(自身を除く): 52789800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 797, 840, 868, 930, 1085, 1240, 1302, 1594, 1736, 1860, 2170, 2391, 2604, 3188, 3255, 3720, 3985, 4340, 4782, 5208, 5579, 6376, 6510, 7970, 8680, 9564, 11158, 11955, 13020, 15940, 16737, 19128, 22316, 23910, 24707, 26040, 27895, 31880, 33474, 44632, 47820, 49414, 55790, 66948, 74121, 83685, 95640, 98828, 111580, 123535, 133896, 148242, 167370, 172949, 197656, 223160, 247070, 296484, 334740, 345898, 370605, 494140, 518847, 592968, 669480, 691796, 741210, 864745, 988280, 1037694, 1383592, 1482420, 1729490, 2075388, 2594235, 2964840, 3458980, 4150776, 5188470, 6917960, 10376940, 20753880]

約数ペア:

[(1, 20753880), (2, 10376940), (3, 6917960), (4, 5188470), (5, 4150776), (6, 3458980), (7, 2964840), (8, 2594235), (10, 2075388), (12, 1729490), (14, 1482420), (15, 1383592), (20, 1037694), (21, 988280), (24, 864745), (28, 741210), (30, 691796), (31, 669480), (35, 592968), (40, 518847), (42, 494140), (56, 370605), (60, 345898), (62, 334740), (70, 296484), (84, 247070), (93, 223160), (105, 197656), (120, 172949), (124, 167370), (140, 148242), (155, 133896), (168, 123535), (186, 111580), (210, 98828), (217, 95640), (248, 83685), (280, 74121), (310, 66948), (372, 55790), (420, 49414), (434, 47820), (465, 44632), (620, 33474), (651, 31880), (744, 27895), (797, 26040), (840, 24707), (868, 23910), (930, 22316), (1085, 19128), (1240, 16737), (1302, 15940), (1594, 13020), (1736, 11955), (1860, 11158), (2170, 9564), (2391, 8680), (2604, 7970), (3188, 6510), (3255, 6376), (3720, 5579), (3985, 5208), (4340, 4782)]