208231640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:345

約数の個数: 128

約数和(自身を含む): 531878400

約数和(自身を除く): 323646760

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 71, 76, 85, 95, 136, 142, 152, 170, 190, 227, 284, 323, 340, 355, 380, 454, 568, 646, 680, 710, 760, 908, 1135, 1207, 1292, 1349, 1420, 1615, 1816, 2270, 2414, 2584, 2698, 2840, 3230, 3859, 4313, 4540, 4828, 5396, 6035, 6460, 6745, 7718, 8626, 9080, 9656, 10792, 12070, 12920, 13490, 15436, 16117, 17252, 19295, 21565, 22933, 24140, 26980, 30872, 32234, 34504, 38590, 43130, 45866, 48280, 53960, 64468, 73321, 77180, 80585, 86260, 91732, 114665, 128936, 146642, 154360, 161170, 172520, 183464, 229330, 273989, 293284, 306223, 322340, 366605, 458660, 547978, 586568, 612446, 644680, 733210, 917320, 1095956, 1224892, 1369945, 1466420, 1531115, 2191912, 2449784, 2739890, 2932840, 3062230, 5205791, 5479780, 6124460, 10411582, 10959560, 12248920, 20823164, 26028955, 41646328, 52057910, 104115820, 208231640]

約数ペア:

[(1, 208231640), (2, 104115820), (4, 52057910), (5, 41646328), (8, 26028955), (10, 20823164), (17, 12248920), (19, 10959560), (20, 10411582), (34, 6124460), (38, 5479780), (40, 5205791), (68, 3062230), (71, 2932840), (76, 2739890), (85, 2449784), (95, 2191912), (136, 1531115), (142, 1466420), (152, 1369945), (170, 1224892), (190, 1095956), (227, 917320), (284, 733210), (323, 644680), (340, 612446), (355, 586568), (380, 547978), (454, 458660), (568, 366605), (646, 322340), (680, 306223), (710, 293284), (760, 273989), (908, 229330), (1135, 183464), (1207, 172520), (1292, 161170), (1349, 154360), (1420, 146642), (1615, 128936), (1816, 114665), (2270, 91732), (2414, 86260), (2584, 80585), (2698, 77180), (2840, 73321), (3230, 64468), (3859, 53960), (4313, 48280), (4540, 45866), (4828, 43130), (5396, 38590), (6035, 34504), (6460, 32234), (6745, 30872), (7718, 26980), (8626, 24140), (9080, 22933), (9656, 21565), (10792, 19295), (12070, 17252), (12920, 16117), (13490, 15436)]