21144360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 68014080

約数和(自身を除く): 46869720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 47, 60, 69, 92, 94, 115, 120, 138, 141, 163, 184, 188, 230, 235, 276, 282, 326, 345, 376, 460, 470, 489, 552, 564, 652, 690, 705, 815, 920, 940, 978, 1081, 1128, 1304, 1380, 1410, 1630, 1880, 1956, 2162, 2445, 2760, 2820, 3243, 3260, 3749, 3912, 4324, 4890, 5405, 5640, 6486, 6520, 7498, 7661, 8648, 9780, 10810, 11247, 12972, 14996, 15322, 16215, 18745, 19560, 21620, 22494, 22983, 25944, 29992, 30644, 32430, 37490, 38305, 43240, 44988, 45966, 56235, 61288, 64860, 74980, 76610, 89976, 91932, 112470, 114915, 129720, 149960, 153220, 176203, 183864, 224940, 229830, 306440, 352406, 449880, 459660, 528609, 704812, 881015, 919320, 1057218, 1409624, 1762030, 2114436, 2643045, 3524060, 4228872, 5286090, 7048120, 10572180, 21144360]

約数ペア:

[(1, 21144360), (2, 10572180), (3, 7048120), (4, 5286090), (5, 4228872), (6, 3524060), (8, 2643045), (10, 2114436), (12, 1762030), (15, 1409624), (20, 1057218), (23, 919320), (24, 881015), (30, 704812), (40, 528609), (46, 459660), (47, 449880), (60, 352406), (69, 306440), (92, 229830), (94, 224940), (115, 183864), (120, 176203), (138, 153220), (141, 149960), (163, 129720), (184, 114915), (188, 112470), (230, 91932), (235, 89976), (276, 76610), (282, 74980), (326, 64860), (345, 61288), (376, 56235), (460, 45966), (470, 44988), (489, 43240), (552, 38305), (564, 37490), (652, 32430), (690, 30644), (705, 29992), (815, 25944), (920, 22983), (940, 22494), (978, 21620), (1081, 19560), (1128, 18745), (1304, 16215), (1380, 15322), (1410, 14996), (1630, 12972), (1880, 11247), (1956, 10810), (2162, 9780), (2445, 8648), (2760, 7661), (2820, 7498), (3243, 6520), (3260, 6486), (3749, 5640), (3912, 5405), (4324, 4890)]