212380980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{505669}}^1$

素因数の和:505688

約数の個数: 48

約数和(自身を含む): 679620480

約数和(自身を除く): 467239500

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, 505669, 1011338, 1517007, 2022676, 2528345, 3034014, 3539683, 5056690, 6068028, 7079366, 7585035, 10113380, 10619049, 14158732, 15170070, 17698415, 21238098, 30340140, 35396830, 42476196, 53095245, 70793660, 106190490, 212380980]

約数ペア:

[(1, 212380980), (2, 106190490), (3, 70793660), (4, 53095245), (5, 42476196), (6, 35396830), (7, 30340140), (10, 21238098), (12, 17698415), (14, 15170070), (15, 14158732), (20, 10619049), (21, 10113380), (28, 7585035), (30, 7079366), (35, 6068028), (42, 5056690), (60, 3539683), (70, 3034014), (84, 2528345), (105, 2022676), (140, 1517007), (210, 1011338), (420, 505669)]