28963980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{941}}^1$

素因数の和:981

約数の個数: 120

約数和(自身を含む): 95744880

約数和(自身を除く): 66780900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 810, 855, 941, 1026, 1140, 1539, 1620, 1710, 1882, 2052, 2565, 2823, 3078, 3420, 3764, 4705, 5130, 5646, 6156, 7695, 8469, 9410, 10260, 11292, 14115, 15390, 16938, 17879, 18820, 25407, 28230, 30780, 33876, 35758, 42345, 50814, 53637, 56460, 71516, 76221, 84690, 89395, 101628, 107274, 127035, 152442, 160911, 169380, 178790, 214548, 254070, 268185, 304884, 321822, 357580, 381105, 482733, 508140, 536370, 643644, 762210, 804555, 965466, 1072740, 1448199, 1524420, 1609110, 1930932, 2413665, 2896398, 3218220, 4827330, 5792796, 7240995, 9654660, 14481990, 28963980]

約数ペア:

[(1, 28963980), (2, 14481990), (3, 9654660), (4, 7240995), (5, 5792796), (6, 4827330), (9, 3218220), (10, 2896398), (12, 2413665), (15, 1930932), (18, 1609110), (19, 1524420), (20, 1448199), (27, 1072740), (30, 965466), (36, 804555), (38, 762210), (45, 643644), (54, 536370), (57, 508140), (60, 482733), (76, 381105), (81, 357580), (90, 321822), (95, 304884), (108, 268185), (114, 254070), (135, 214548), (162, 178790), (171, 169380), (180, 160911), (190, 152442), (228, 127035), (270, 107274), (285, 101628), (324, 89395), (342, 84690), (380, 76221), (405, 71516), (513, 56460), (540, 53637), (570, 50814), (684, 42345), (810, 35758), (855, 33876), (941, 30780), (1026, 28230), (1140, 25407), (1539, 18820), (1620, 17879), (1710, 16938), (1882, 15390), (2052, 14115), (2565, 11292), (2823, 10260), (3078, 9410), (3420, 8469), (3764, 7695), (4705, 6156), (5130, 5646)]