20247760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19469}}^1$

素因数の和:19495

約数の個数: 40

約数和(自身を含む): 50699880

約数和(自身を除く): 30452120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19469, 38938, 77876, 97345, 155752, 194690, 253097, 311504, 389380, 506194, 778760, 1012388, 1265485, 1557520, 2024776, 2530970, 4049552, 5061940, 10123880, 20247760]

約数ペア:

[(1, 20247760), (2, 10123880), (4, 5061940), (5, 4049552), (8, 2530970), (10, 2024776), (13, 1557520), (16, 1265485), (20, 1012388), (26, 778760), (40, 506194), (52, 389380), (65, 311504), (80, 253097), (104, 194690), (130, 155752), (208, 97345), (260, 77876), (520, 38938), (1040, 19469)]