65380640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 180319608

約数和(自身を除く): 114938968

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 43, 52, 65, 68, 80, 85, 86, 104, 130, 136, 160, 170, 172, 208, 215, 221, 260, 272, 340, 344, 416, 430, 442, 520, 544, 559, 680, 688, 731, 860, 884, 1040, 1105, 1118, 1360, 1376, 1462, 1720, 1768, 1849, 2080, 2210, 2236, 2720, 2795, 2924, 3440, 3536, 3655, 3698, 4420, 4472, 5590, 5848, 6880, 7072, 7310, 7396, 8840, 8944, 9245, 9503, 11180, 11696, 14620, 14792, 17680, 17888, 18490, 19006, 22360, 23392, 24037, 29240, 29584, 31433, 35360, 36980, 38012, 44720, 47515, 48074, 58480, 59168, 62866, 73960, 76024, 89440, 95030, 96148, 116960, 120185, 125732, 147920, 152048, 157165, 190060, 192296, 240370, 251464, 295840, 304096, 314330, 380120, 384592, 408629, 480740, 502928, 628660, 760240, 769184, 817258, 961480, 1005856, 1257320, 1520480, 1634516, 1922960, 2043145, 2514640, 3269032, 3845920, 4086290, 5029280, 6538064, 8172580, 13076128, 16345160, 32690320, 65380640]

約数ペア:

[(1, 65380640), (2, 32690320), (4, 16345160), (5, 13076128), (8, 8172580), (10, 6538064), (13, 5029280), (16, 4086290), (17, 3845920), (20, 3269032), (26, 2514640), (32, 2043145), (34, 1922960), (40, 1634516), (43, 1520480), (52, 1257320), (65, 1005856), (68, 961480), (80, 817258), (85, 769184), (86, 760240), (104, 628660), (130, 502928), (136, 480740), (160, 408629), (170, 384592), (172, 380120), (208, 314330), (215, 304096), (221, 295840), (260, 251464), (272, 240370), (340, 192296), (344, 190060), (416, 157165), (430, 152048), (442, 147920), (520, 125732), (544, 120185), (559, 116960), (680, 96148), (688, 95030), (731, 89440), (860, 76024), (884, 73960), (1040, 62866), (1105, 59168), (1118, 58480), (1360, 48074), (1376, 47515), (1462, 44720), (1720, 38012), (1768, 36980), (1849, 35360), (2080, 31433), (2210, 29584), (2236, 29240), (2720, 24037), (2795, 23392), (2924, 22360), (3440, 19006), (3536, 18490), (3655, 17888), (3698, 17680), (4420, 14792), (4472, 14620), (5590, 11696), (5848, 11180), (6880, 9503), (7072, 9245), (7310, 8944), (7396, 8840)]