28391220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1103}}^1$

素因数の和:1142

約数の個数: 144

約数和(自身を含む): 101267712

約数和(自身を除く): 72876492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 780, 858, 990, 1103, 1170, 1287, 1430, 1716, 1980, 2145, 2206, 2340, 2574, 2860, 3309, 4290, 4412, 5148, 5515, 6435, 6618, 8580, 9927, 11030, 12133, 12870, 13236, 14339, 16545, 19854, 22060, 24266, 25740, 28678, 33090, 36399, 39708, 43017, 48532, 49635, 57356, 60665, 66180, 71695, 72798, 86034, 99270, 109197, 121330, 129051, 143390, 145596, 157729, 172068, 181995, 198540, 215085, 218394, 242660, 258102, 286780, 315458, 363990, 430170, 436788, 473187, 516204, 545985, 630916, 645255, 727980, 788645, 860340, 946374, 1091970, 1290510, 1419561, 1577290, 1892748, 2183940, 2365935, 2581020, 2839122, 3154580, 4731870, 5678244, 7097805, 9463740, 14195610, 28391220]

約数ペア:

[(1, 28391220), (2, 14195610), (3, 9463740), (4, 7097805), (5, 5678244), (6, 4731870), (9, 3154580), (10, 2839122), (11, 2581020), (12, 2365935), (13, 2183940), (15, 1892748), (18, 1577290), (20, 1419561), (22, 1290510), (26, 1091970), (30, 946374), (33, 860340), (36, 788645), (39, 727980), (44, 645255), (45, 630916), (52, 545985), (55, 516204), (60, 473187), (65, 436788), (66, 430170), (78, 363990), (90, 315458), (99, 286780), (110, 258102), (117, 242660), (130, 218394), (132, 215085), (143, 198540), (156, 181995), (165, 172068), (180, 157729), (195, 145596), (198, 143390), (220, 129051), (234, 121330), (260, 109197), (286, 99270), (330, 86034), (390, 72798), (396, 71695), (429, 66180), (468, 60665), (495, 57356), (572, 49635), (585, 48532), (660, 43017), (715, 39708), (780, 36399), (858, 33090), (990, 28678), (1103, 25740), (1170, 24266), (1287, 22060), (1430, 19854), (1716, 16545), (1980, 14339), (2145, 13236), (2206, 12870), (2340, 12133), (2574, 11030), (2860, 9927), (3309, 8580), (4290, 6618), (4412, 6435), (5148, 5515)]