18745220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4241}}^1$

素因数の和:4280

約数の個数: 48

約数和(自身を含む): 44897328

約数和(自身を除く): 26152108

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4241, 4420, 8482, 16964, 21205, 42410, 55133, 72097, 84820, 110266, 144194, 220532, 275665, 288388, 360485, 551330, 720970, 937261, 1102660, 1441940, 1874522, 3749044, 4686305, 9372610, 18745220]

約数ペア:

[(1, 18745220), (2, 9372610), (4, 4686305), (5, 3749044), (10, 1874522), (13, 1441940), (17, 1102660), (20, 937261), (26, 720970), (34, 551330), (52, 360485), (65, 288388), (68, 275665), (85, 220532), (130, 144194), (170, 110266), (221, 84820), (260, 72097), (340, 55133), (442, 42410), (884, 21205), (1105, 16964), (2210, 8482), (4241, 4420)]