19868920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{479}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 48211200

約数和(自身を除く): 28342280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 61, 68, 85, 122, 136, 170, 244, 305, 340, 479, 488, 610, 680, 958, 1037, 1220, 1916, 2074, 2395, 2440, 3832, 4148, 4790, 5185, 8143, 8296, 9580, 10370, 16286, 19160, 20740, 29219, 32572, 40715, 41480, 58438, 65144, 81430, 116876, 146095, 162860, 233752, 292190, 325720, 496723, 584380, 993446, 1168760, 1986892, 2483615, 3973784, 4967230, 9934460, 19868920]

約数ペア:

[(1, 19868920), (2, 9934460), (4, 4967230), (5, 3973784), (8, 2483615), (10, 1986892), (17, 1168760), (20, 993446), (34, 584380), (40, 496723), (61, 325720), (68, 292190), (85, 233752), (122, 162860), (136, 146095), (170, 116876), (244, 81430), (305, 65144), (340, 58438), (479, 41480), (488, 40715), (610, 32572), (680, 29219), (958, 20740), (1037, 19160), (1220, 16286), (1916, 10370), (2074, 9580), (2395, 8296), (2440, 8143), (3832, 5185), (4148, 4790)]