20851860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20443}}^1$

素因数の和:20472

約数の個数: 48

約数和(自身を含む): 61822656

約数和(自身を除く): 40970796

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20443, 40886, 61329, 81772, 102215, 122658, 204430, 245316, 306645, 347531, 408860, 613290, 695062, 1042593, 1226580, 1390124, 1737655, 2085186, 3475310, 4170372, 5212965, 6950620, 10425930, 20851860]

約数ペア:

[(1, 20851860), (2, 10425930), (3, 6950620), (4, 5212965), (5, 4170372), (6, 3475310), (10, 2085186), (12, 1737655), (15, 1390124), (17, 1226580), (20, 1042593), (30, 695062), (34, 613290), (51, 408860), (60, 347531), (68, 306645), (85, 245316), (102, 204430), (170, 122658), (204, 102215), (255, 81772), (340, 61329), (510, 40886), (1020, 20443)]