20645520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12289}}^1$

素因数の和:12312

約数の個数: 80

約数和(自身を含む): 73150080

約数和(自身を除く): 52504560

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, 12289, 24578, 36867, 49156, 61445, 73734, 86023, 98312, 122890, 147468, 172046, 184335, 196624, 245780, 258069, 294936, 344092, 368670, 430115, 491560, 516138, 589872, 688184, 737340, 860230, 983120, 1032276, 1290345, 1376368, 1474680, 1720460, 2064552, 2580690, 2949360, 3440920, 4129104, 5161380, 6881840, 10322760, 20645520]

約数ペア:

[(1, 20645520), (2, 10322760), (3, 6881840), (4, 5161380), (5, 4129104), (6, 3440920), (7, 2949360), (8, 2580690), (10, 2064552), (12, 1720460), (14, 1474680), (15, 1376368), (16, 1290345), (20, 1032276), (21, 983120), (24, 860230), (28, 737340), (30, 688184), (35, 589872), (40, 516138), (42, 491560), (48, 430115), (56, 368670), (60, 344092), (70, 294936), (80, 258069), (84, 245780), (105, 196624), (112, 184335), (120, 172046), (140, 147468), (168, 122890), (210, 98312), (240, 86023), (280, 73734), (336, 61445), (420, 49156), (560, 36867), (840, 24578), (1680, 12289)]