20996910040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1\times {\mathrm{44587}}^1$

素因数の和:44852

約数の個数: 64

約数和(自身を含む): 48267401760

約数和(自身を除く): 27270491720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 193, 244, 305, 386, 488, 610, 772, 965, 1220, 1544, 1930, 2440, 3860, 7720, 11773, 23546, 44587, 47092, 58865, 89174, 94184, 117730, 178348, 222935, 235460, 356696, 445870, 470920, 891740, 1783480, 2719807, 5439614, 8605291, 10879228, 13599035, 17210582, 21758456, 27198070, 34421164, 43026455, 54396140, 68842328, 86052910, 108792280, 172105820, 344211640, 524922751, 1049845502, 2099691004, 2624613755, 4199382008, 5249227510, 10498455020, 20996910040]

約数ペア:

[(1, 20996910040), (2, 10498455020), (4, 5249227510), (5, 4199382008), (8, 2624613755), (10, 2099691004), (20, 1049845502), (40, 524922751), (61, 344211640), (122, 172105820), (193, 108792280), (244, 86052910), (305, 68842328), (386, 54396140), (488, 43026455), (610, 34421164), (772, 27198070), (965, 21758456), (1220, 17210582), (1544, 13599035), (1930, 10879228), (2440, 8605291), (3860, 5439614), (7720, 2719807), (11773, 1783480), (23546, 891740), (44587, 470920), (47092, 445870), (58865, 356696), (89174, 235460), (94184, 222935), (117730, 178348)]