20726420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7247}}^1$

素因数の和:7280

約数の個数: 48

約数和(自身を含む): 51141888

約数和(自身を除く): 30415468

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7247, 14494, 28988, 36235, 72470, 79717, 94211, 144940, 159434, 188422, 318868, 376844, 398585, 471055, 797170, 942110, 1036321, 1594340, 1884220, 2072642, 4145284, 5181605, 10363210, 20726420]

約数ペア:

[(1, 20726420), (2, 10363210), (4, 5181605), (5, 4145284), (10, 2072642), (11, 1884220), (13, 1594340), (20, 1036321), (22, 942110), (26, 797170), (44, 471055), (52, 398585), (55, 376844), (65, 318868), (110, 188422), (130, 159434), (143, 144940), (220, 94211), (260, 79717), (286, 72470), (572, 36235), (715, 28988), (1430, 14494), (2860, 7247)]