21990384

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:735

約数の個数: 120

約数和(自身を含む): 70276752

約数和(自身を除く): 48286368

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 17, 18, 24, 26, 34, 36, 39, 48, 51, 52, 68, 72, 78, 102, 104, 117, 136, 144, 153, 156, 204, 208, 221, 234, 272, 306, 312, 408, 442, 468, 612, 624, 663, 691, 816, 884, 936, 1224, 1326, 1382, 1768, 1872, 1989, 2073, 2448, 2652, 2764, 3536, 3978, 4146, 5304, 5528, 6219, 7956, 8292, 8983, 10608, 11056, 11747, 12438, 15912, 16584, 17966, 23494, 24876, 26949, 31824, 33168, 35241, 35932, 46988, 49752, 53898, 70482, 71864, 80847, 93976, 99504, 105723, 107796, 140964, 143728, 152711, 161694, 187952, 211446, 215592, 281928, 305422, 323388, 422892, 431184, 458133, 563856, 610844, 646776, 845784, 916266, 1221688, 1293552, 1374399, 1691568, 1832532, 2443376, 2748798, 3665064, 5497596, 7330128, 10995192, 21990384]

約数ペア:

[(1, 21990384), (2, 10995192), (3, 7330128), (4, 5497596), (6, 3665064), (8, 2748798), (9, 2443376), (12, 1832532), (13, 1691568), (16, 1374399), (17, 1293552), (18, 1221688), (24, 916266), (26, 845784), (34, 646776), (36, 610844), (39, 563856), (48, 458133), (51, 431184), (52, 422892), (68, 323388), (72, 305422), (78, 281928), (102, 215592), (104, 211446), (117, 187952), (136, 161694), (144, 152711), (153, 143728), (156, 140964), (204, 107796), (208, 105723), (221, 99504), (234, 93976), (272, 80847), (306, 71864), (312, 70482), (408, 53898), (442, 49752), (468, 46988), (612, 35932), (624, 35241), (663, 33168), (691, 31824), (816, 26949), (884, 24876), (936, 23494), (1224, 17966), (1326, 16584), (1382, 15912), (1768, 12438), (1872, 11747), (1989, 11056), (2073, 10608), (2448, 8983), (2652, 8292), (2764, 7956), (3536, 6219), (3978, 5528), (4146, 5304)]