18637640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:319

約数の個数: 96

約数和(自身を含む): 50294520

約数和(自身を除く): 31656880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 49, 56, 70, 74, 98, 140, 148, 185, 196, 245, 257, 259, 280, 296, 370, 392, 490, 514, 518, 740, 980, 1028, 1036, 1285, 1295, 1480, 1799, 1813, 1960, 2056, 2072, 2570, 2590, 3598, 3626, 5140, 5180, 7196, 7252, 8995, 9065, 9509, 10280, 10360, 12593, 14392, 14504, 17990, 18130, 19018, 25186, 35980, 36260, 38036, 47545, 50372, 62965, 66563, 71960, 72520, 76072, 95090, 100744, 125930, 133126, 190180, 251860, 266252, 332815, 380360, 465941, 503720, 532504, 665630, 931882, 1331260, 1863764, 2329705, 2662520, 3727528, 4659410, 9318820, 18637640]

約数ペア:

[(1, 18637640), (2, 9318820), (4, 4659410), (5, 3727528), (7, 2662520), (8, 2329705), (10, 1863764), (14, 1331260), (20, 931882), (28, 665630), (35, 532504), (37, 503720), (40, 465941), (49, 380360), (56, 332815), (70, 266252), (74, 251860), (98, 190180), (140, 133126), (148, 125930), (185, 100744), (196, 95090), (245, 76072), (257, 72520), (259, 71960), (280, 66563), (296, 62965), (370, 50372), (392, 47545), (490, 38036), (514, 36260), (518, 35980), (740, 25186), (980, 19018), (1028, 18130), (1036, 17990), (1285, 14504), (1295, 14392), (1480, 12593), (1799, 10360), (1813, 10280), (1960, 9509), (2056, 9065), (2072, 8995), (2570, 7252), (2590, 7196), (3598, 5180), (3626, 5140)]