81433520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145417}}^1$

素因数の和:145437

約数の個数: 40

約数和(自身を含む): 216381984

約数和(自身を除く): 134948464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145417, 290834, 581668, 727085, 1017919, 1163336, 1454170, 2035838, 2326672, 2908340, 4071676, 5089595, 5816680, 8143352, 10179190, 11633360, 16286704, 20358380, 40716760, 81433520]

約数ペア:

[(1, 81433520), (2, 40716760), (4, 20358380), (5, 16286704), (7, 11633360), (8, 10179190), (10, 8143352), (14, 5816680), (16, 5089595), (20, 4071676), (28, 2908340), (35, 2326672), (40, 2035838), (56, 1454170), (70, 1163336), (80, 1017919), (112, 727085), (140, 581668), (280, 290834), (560, 145417)]