21303660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50723}}^1$

素因数の和:50742

約数の個数: 48

約数和(自身を含む): 68173056

約数和(自身を除く): 46869396

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50723, 101446, 152169, 202892, 253615, 304338, 355061, 507230, 608676, 710122, 760845, 1014460, 1065183, 1420244, 1521690, 1775305, 2130366, 3043380, 3550610, 4260732, 5325915, 7101220, 10651830, 21303660]

約数ペア:

[(1, 21303660), (2, 10651830), (3, 7101220), (4, 5325915), (5, 4260732), (6, 3550610), (7, 3043380), (10, 2130366), (12, 1775305), (14, 1521690), (15, 1420244), (20, 1065183), (21, 1014460), (28, 760845), (30, 710122), (35, 608676), (42, 507230), (60, 355061), (70, 304338), (84, 253615), (105, 202892), (140, 152169), (210, 101446), (420, 50723)]