20849640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24821}}^1$

素因数の和:24842

約数の個数: 64

約数和(自身を含む): 71487360

約数和(自身を除く): 50637720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24821, 49642, 74463, 99284, 124105, 148926, 173747, 198568, 248210, 297852, 347494, 372315, 496420, 521241, 595704, 694988, 744630, 868735, 992840, 1042482, 1389976, 1489260, 1737470, 2084964, 2606205, 2978520, 3474940, 4169928, 5212410, 6949880, 10424820, 20849640]

約数ペア:

[(1, 20849640), (2, 10424820), (3, 6949880), (4, 5212410), (5, 4169928), (6, 3474940), (7, 2978520), (8, 2606205), (10, 2084964), (12, 1737470), (14, 1489260), (15, 1389976), (20, 1042482), (21, 992840), (24, 868735), (28, 744630), (30, 694988), (35, 595704), (40, 521241), (42, 496420), (56, 372315), (60, 347494), (70, 297852), (84, 248210), (105, 198568), (120, 173747), (140, 148926), (168, 124105), (210, 99284), (280, 74463), (420, 49642), (840, 24821)]