19307720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 45465840

約数和(自身を除く): 26158120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 61, 82, 122, 164, 193, 205, 244, 305, 328, 386, 410, 488, 610, 772, 820, 965, 1220, 1544, 1640, 1930, 2440, 2501, 3860, 5002, 7720, 7913, 10004, 11773, 12505, 15826, 20008, 23546, 25010, 31652, 39565, 47092, 50020, 58865, 63304, 79130, 94184, 100040, 117730, 158260, 235460, 316520, 470920, 482693, 965386, 1930772, 2413465, 3861544, 4826930, 9653860, 19307720]

約数ペア:

[(1, 19307720), (2, 9653860), (4, 4826930), (5, 3861544), (8, 2413465), (10, 1930772), (20, 965386), (40, 482693), (41, 470920), (61, 316520), (82, 235460), (122, 158260), (164, 117730), (193, 100040), (205, 94184), (244, 79130), (305, 63304), (328, 58865), (386, 50020), (410, 47092), (488, 39565), (610, 31652), (772, 25010), (820, 23546), (965, 20008), (1220, 15826), (1544, 12505), (1640, 11773), (1930, 10004), (2440, 7913), (2501, 7720), (3860, 5002)]