20197616985

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{1471}}^1$

素因数の和:1988

約数の個数: 144

約数和(自身を含む): 43979120640

約数和(自身を除く): 23781503655

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 49, 63, 65, 91, 105, 117, 147, 195, 245, 273, 315, 441, 455, 479, 585, 637, 735, 819, 1365, 1437, 1471, 1911, 2205, 2395, 3185, 3353, 4095, 4311, 4413, 5733, 6227, 7185, 7355, 9555, 10059, 10297, 13239, 16765, 18681, 19123, 21555, 22065, 23471, 28665, 30177, 30891, 31135, 43589, 50295, 51485, 56043, 57369, 66195, 70413, 72079, 92673, 93405, 95615, 117355, 130767, 133861, 150885, 154455, 172107, 211239, 216237, 217945, 280215, 286845, 305123, 352065, 360395, 392301, 401583, 463365, 648711, 653835, 669305, 704609, 860535, 915369, 937027, 1056195, 1081185, 1204749, 1525615, 1961505, 2007915, 2113827, 2746107, 2811081, 3243555, 3523045, 4576845, 4685135, 4932263, 6023745, 6341481, 8433243, 9159917, 10569135, 13730535, 14055405, 14796789, 24661315, 27479751, 31707405, 34525841, 42166215, 44390367, 45799585, 64119419, 73983945, 82439253, 103577523, 137398755, 172629205, 192358257, 221951835, 310732569, 320597095, 412196265, 448835933, 517887615, 577074771, 961791285, 1346507799, 1553662845, 2244179665, 2885373855, 4039523397, 6732538995, 20197616985]

約数ペア:

[(1, 20197616985), (3, 6732538995), (5, 4039523397), (7, 2885373855), (9, 2244179665), (13, 1553662845), (15, 1346507799), (21, 961791285), (35, 577074771), (39, 517887615), (45, 448835933), (49, 412196265), (63, 320597095), (65, 310732569), (91, 221951835), (105, 192358257), (117, 172629205), (147, 137398755), (195, 103577523), (245, 82439253), (273, 73983945), (315, 64119419), (441, 45799585), (455, 44390367), (479, 42166215), (585, 34525841), (637, 31707405), (735, 27479751), (819, 24661315), (1365, 14796789), (1437, 14055405), (1471, 13730535), (1911, 10569135), (2205, 9159917), (2395, 8433243), (3185, 6341481), (3353, 6023745), (4095, 4932263), (4311, 4685135), (4413, 4576845), (5733, 3523045), (6227, 3243555), (7185, 2811081), (7355, 2746107), (9555, 2113827), (10059, 2007915), (10297, 1961505), (13239, 1525615), (16765, 1204749), (18681, 1081185), (19123, 1056195), (21555, 937027), (22065, 915369), (23471, 860535), (28665, 704609), (30177, 669305), (30891, 653835), (31135, 648711), (43589, 463365), (50295, 401583), (51485, 392301), (56043, 360395), (57369, 352065), (66195, 305123), (70413, 286845), (72079, 280215), (92673, 217945), (93405, 216237), (95615, 211239), (117355, 172107), (130767, 154455), (133861, 150885)]