215865020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{6143}}^1$

素因数の和:6410

約数の個数: 48

約数和(自身を含む): 520224768

約数和(自身を除く): 304359748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 1004, 1255, 1757, 2510, 3514, 5020, 6143, 7028, 8785, 12286, 17570, 24572, 30715, 35140, 43001, 61430, 86002, 122860, 172004, 215005, 430010, 860020, 1541893, 3083786, 6167572, 7709465, 10793251, 15418930, 21586502, 30837860, 43173004, 53966255, 107932510, 215865020]

約数ペア:

[(1, 215865020), (2, 107932510), (4, 53966255), (5, 43173004), (7, 30837860), (10, 21586502), (14, 15418930), (20, 10793251), (28, 7709465), (35, 6167572), (70, 3083786), (140, 1541893), (251, 860020), (502, 430010), (1004, 215005), (1255, 172004), (1757, 122860), (2510, 86002), (3514, 61430), (5020, 43001), (6143, 35140), (7028, 30715), (8785, 24572), (12286, 17570)]