78820980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187669}}^1$

素因数の和:187688

約数の個数: 48

約数和(自身を含む): 252228480

約数和(自身を除く): 173407500

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, 187669, 375338, 563007, 750676, 938345, 1126014, 1313683, 1876690, 2252028, 2627366, 2815035, 3753380, 3941049, 5254732, 5630070, 6568415, 7882098, 11260140, 13136830, 15764196, 19705245, 26273660, 39410490, 78820980]

約数ペア:

[(1, 78820980), (2, 39410490), (3, 26273660), (4, 19705245), (5, 15764196), (6, 13136830), (7, 11260140), (10, 7882098), (12, 6568415), (14, 5630070), (15, 5254732), (20, 3941049), (21, 3753380), (28, 2815035), (30, 2627366), (35, 2252028), (42, 1876690), (60, 1313683), (70, 1126014), (84, 938345), (105, 750676), (140, 563007), (210, 375338), (420, 187669)]