216455820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{515371}}^1$

素因数の和:515390

約数の個数: 48

約数和(自身を含む): 692659968

約数和(自身を除く): 476204148

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, 515371, 1030742, 1546113, 2061484, 2576855, 3092226, 3607597, 5153710, 6184452, 7215194, 7730565, 10307420, 10822791, 14430388, 15461130, 18037985, 21645582, 30922260, 36075970, 43291164, 54113955, 72151940, 108227910, 216455820]

約数ペア:

[(1, 216455820), (2, 108227910), (3, 72151940), (4, 54113955), (5, 43291164), (6, 36075970), (7, 30922260), (10, 21645582), (12, 18037985), (14, 15461130), (15, 14430388), (20, 10822791), (21, 10307420), (28, 7730565), (30, 7215194), (35, 6184452), (42, 5153710), (60, 3607597), (70, 3092226), (84, 2576855), (105, 2061484), (140, 1546113), (210, 1030742), (420, 515371)]