21681324

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{241}}^1$

素因数の和:285

約数の個数: 144

約数和(自身を含む): 69521760

約数和(自身を除く): 47840436

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 27, 28, 34, 36, 42, 49, 51, 54, 63, 68, 84, 98, 102, 108, 119, 126, 147, 153, 189, 196, 204, 238, 241, 252, 294, 306, 357, 378, 441, 459, 476, 482, 588, 612, 714, 723, 756, 833, 882, 918, 964, 1071, 1323, 1428, 1446, 1666, 1687, 1764, 1836, 2142, 2169, 2499, 2646, 2892, 3213, 3332, 3374, 4097, 4284, 4338, 4998, 5061, 5292, 6426, 6507, 6748, 7497, 8194, 8676, 9996, 10122, 11809, 12291, 12852, 13014, 14994, 15183, 16388, 20244, 22491, 23618, 24582, 26028, 28679, 29988, 30366, 35427, 36873, 44982, 45549, 47236, 49164, 57358, 60732, 70854, 73746, 86037, 89964, 91098, 106281, 110619, 114716, 141708, 147492, 172074, 182196, 200753, 212562, 221238, 258111, 318843, 344148, 401506, 425124, 442476, 516222, 602259, 637686, 774333, 803012, 1032444, 1204518, 1275372, 1548666, 1806777, 2409036, 3097332, 3613554, 5420331, 7227108, 10840662, 21681324]

約数ペア:

[(1, 21681324), (2, 10840662), (3, 7227108), (4, 5420331), (6, 3613554), (7, 3097332), (9, 2409036), (12, 1806777), (14, 1548666), (17, 1275372), (18, 1204518), (21, 1032444), (27, 803012), (28, 774333), (34, 637686), (36, 602259), (42, 516222), (49, 442476), (51, 425124), (54, 401506), (63, 344148), (68, 318843), (84, 258111), (98, 221238), (102, 212562), (108, 200753), (119, 182196), (126, 172074), (147, 147492), (153, 141708), (189, 114716), (196, 110619), (204, 106281), (238, 91098), (241, 89964), (252, 86037), (294, 73746), (306, 70854), (357, 60732), (378, 57358), (441, 49164), (459, 47236), (476, 45549), (482, 44982), (588, 36873), (612, 35427), (714, 30366), (723, 29988), (756, 28679), (833, 26028), (882, 24582), (918, 23618), (964, 22491), (1071, 20244), (1323, 16388), (1428, 15183), (1446, 14994), (1666, 13014), (1687, 12852), (1764, 12291), (1836, 11809), (2142, 10122), (2169, 9996), (2499, 8676), (2646, 8194), (2892, 7497), (3213, 6748), (3332, 6507), (3374, 6426), (4097, 5292), (4284, 5061), (4338, 4998)]