20816880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12391}}^1$

素因数の和:12414

約数の個数: 80

約数和(自身を含む): 73757184

約数和(自身を除く): 52940304

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, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12391, 24782, 37173, 49564, 61955, 74346, 86737, 99128, 123910, 148692, 173474, 185865, 198256, 247820, 260211, 297384, 346948, 371730, 433685, 495640, 520422, 594768, 693896, 743460, 867370, 991280, 1040844, 1301055, 1387792, 1486920, 1734740, 2081688, 2602110, 2973840, 3469480, 4163376, 5204220, 6938960, 10408440, 20816880]

約数ペア:

[(1, 20816880), (2, 10408440), (3, 6938960), (4, 5204220), (5, 4163376), (6, 3469480), (7, 2973840), (8, 2602110), (10, 2081688), (12, 1734740), (14, 1486920), (15, 1387792), (16, 1301055), (20, 1040844), (21, 991280), (24, 867370), (28, 743460), (30, 693896), (35, 594768), (40, 520422), (42, 495640), (48, 433685), (56, 371730), (60, 346948), (70, 297384), (80, 260211), (84, 247820), (105, 198256), (112, 185865), (120, 173474), (140, 148692), (168, 123910), (210, 99128), (240, 86737), (280, 74346), (336, 61955), (420, 49564), (560, 37173), (840, 24782), (1680, 12391)]