278460420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{663001}}^1$

素因数の和:663020

約数の個数: 48

約数和(自身を含む): 891074688

約数和(自身を除く): 612614268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 663001, 1326002, 1989003, 2652004, 3315005, 3978006, 4641007, 6630010, 7956012, 9282014, 9945015, 13260020, 13923021, 18564028, 19890030, 23205035, 27846042, 39780060, 46410070, 55692084, 69615105, 92820140, 139230210, 278460420]

約数ペア:

[(1, 278460420), (2, 139230210), (3, 92820140), (4, 69615105), (5, 55692084), (6, 46410070), (7, 39780060), (10, 27846042), (12, 23205035), (14, 19890030), (15, 18564028), (20, 13923021), (21, 13260020), (28, 9945015), (30, 9282014), (35, 7956012), (42, 6630010), (60, 4641007), (70, 3978006), (84, 3315005), (105, 2652004), (140, 1989003), (210, 1326002), (420, 663001)]