21297540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:130

約数の個数: 144

約数和(自身を含む): 69120576

約数和(自身を除く): 47823036

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 23, 30, 33, 44, 46, 55, 60, 61, 66, 69, 92, 110, 115, 122, 132, 138, 165, 183, 220, 230, 244, 253, 276, 305, 330, 345, 366, 460, 506, 529, 610, 660, 671, 690, 732, 759, 915, 1012, 1058, 1220, 1265, 1342, 1380, 1403, 1518, 1587, 1830, 2013, 2116, 2530, 2645, 2684, 2806, 3036, 3174, 3355, 3660, 3795, 4026, 4209, 5060, 5290, 5612, 5819, 6348, 6710, 7015, 7590, 7935, 8052, 8418, 10065, 10580, 11638, 13420, 14030, 15180, 15433, 15870, 16836, 17457, 20130, 21045, 23276, 28060, 29095, 30866, 31740, 32269, 34914, 40260, 42090, 46299, 58190, 61732, 64538, 69828, 77165, 84180, 87285, 92598, 96807, 116380, 129076, 154330, 161345, 174570, 185196, 193614, 231495, 308660, 322690, 349140, 354959, 387228, 462990, 484035, 645380, 709918, 925980, 968070, 1064877, 1419836, 1774795, 1936140, 2129754, 3549590, 4259508, 5324385, 7099180, 10648770, 21297540]

約数ペア:

[(1, 21297540), (2, 10648770), (3, 7099180), (4, 5324385), (5, 4259508), (6, 3549590), (10, 2129754), (11, 1936140), (12, 1774795), (15, 1419836), (20, 1064877), (22, 968070), (23, 925980), (30, 709918), (33, 645380), (44, 484035), (46, 462990), (55, 387228), (60, 354959), (61, 349140), (66, 322690), (69, 308660), (92, 231495), (110, 193614), (115, 185196), (122, 174570), (132, 161345), (138, 154330), (165, 129076), (183, 116380), (220, 96807), (230, 92598), (244, 87285), (253, 84180), (276, 77165), (305, 69828), (330, 64538), (345, 61732), (366, 58190), (460, 46299), (506, 42090), (529, 40260), (610, 34914), (660, 32269), (671, 31740), (690, 30866), (732, 29095), (759, 28060), (915, 23276), (1012, 21045), (1058, 20130), (1220, 17457), (1265, 16836), (1342, 15870), (1380, 15433), (1403, 15180), (1518, 14030), (1587, 13420), (1830, 11638), (2013, 10580), (2116, 10065), (2530, 8418), (2645, 8052), (2684, 7935), (2806, 7590), (3036, 7015), (3174, 6710), (3355, 6348), (3660, 5819), (3795, 5612), (4026, 5290), (4209, 5060)]