20982420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6857}}^1$

素因数の和:6889

約数の個数: 72

約数和(自身を含む): 67400424

約数和(自身を除く): 46418004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6857, 13714, 20571, 27428, 34285, 41142, 61713, 68570, 82284, 102855, 116569, 123426, 137140, 205710, 233138, 246852, 308565, 349707, 411420, 466276, 582845, 617130, 699414, 1049121, 1165690, 1234260, 1398828, 1748535, 2098242, 2331380, 3497070, 4196484, 5245605, 6994140, 10491210, 20982420]

約数ペア:

[(1, 20982420), (2, 10491210), (3, 6994140), (4, 5245605), (5, 4196484), (6, 3497070), (9, 2331380), (10, 2098242), (12, 1748535), (15, 1398828), (17, 1234260), (18, 1165690), (20, 1049121), (30, 699414), (34, 617130), (36, 582845), (45, 466276), (51, 411420), (60, 349707), (68, 308565), (85, 246852), (90, 233138), (102, 205710), (153, 137140), (170, 123426), (180, 116569), (204, 102855), (255, 82284), (306, 68570), (340, 61713), (510, 41142), (612, 34285), (765, 27428), (1020, 20571), (1530, 13714), (3060, 6857)]