20835540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{619}}^1$

素因数の和:662

約数の個数: 144

約数和(自身を含む): 73120320

約数和(自身を除く): 52284780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 17, 18, 20, 22, 30, 33, 34, 36, 44, 45, 51, 55, 60, 66, 68, 85, 90, 99, 102, 110, 132, 153, 165, 170, 180, 187, 198, 204, 220, 255, 306, 330, 340, 374, 396, 495, 510, 561, 612, 619, 660, 748, 765, 935, 990, 1020, 1122, 1238, 1530, 1683, 1857, 1870, 1980, 2244, 2476, 2805, 3060, 3095, 3366, 3714, 3740, 5571, 5610, 6190, 6732, 6809, 7428, 8415, 9285, 10523, 11142, 11220, 12380, 13618, 16830, 18570, 20427, 21046, 22284, 27236, 27855, 31569, 33660, 34045, 37140, 40854, 42092, 52615, 55710, 61281, 63138, 68090, 81708, 94707, 102135, 105230, 111420, 115753, 122562, 126276, 136180, 157845, 189414, 204270, 210460, 231506, 245124, 306405, 315690, 347259, 378828, 408540, 463012, 473535, 578765, 612810, 631380, 694518, 947070, 1041777, 1157530, 1225620, 1389036, 1736295, 1894140, 2083554, 2315060, 3472590, 4167108, 5208885, 6945180, 10417770, 20835540]

約数ペア:

[(1, 20835540), (2, 10417770), (3, 6945180), (4, 5208885), (5, 4167108), (6, 3472590), (9, 2315060), (10, 2083554), (11, 1894140), (12, 1736295), (15, 1389036), (17, 1225620), (18, 1157530), (20, 1041777), (22, 947070), (30, 694518), (33, 631380), (34, 612810), (36, 578765), (44, 473535), (45, 463012), (51, 408540), (55, 378828), (60, 347259), (66, 315690), (68, 306405), (85, 245124), (90, 231506), (99, 210460), (102, 204270), (110, 189414), (132, 157845), (153, 136180), (165, 126276), (170, 122562), (180, 115753), (187, 111420), (198, 105230), (204, 102135), (220, 94707), (255, 81708), (306, 68090), (330, 63138), (340, 61281), (374, 55710), (396, 52615), (495, 42092), (510, 40854), (561, 37140), (612, 34045), (619, 33660), (660, 31569), (748, 27855), (765, 27236), (935, 22284), (990, 21046), (1020, 20427), (1122, 18570), (1238, 16830), (1530, 13618), (1683, 12380), (1857, 11220), (1870, 11142), (1980, 10523), (2244, 9285), (2476, 8415), (2805, 7428), (3060, 6809), (3095, 6732), (3366, 6190), (3714, 5610), (3740, 5571)]