19742720

素因数分解:

$2^{14}\times 5^1\times {\mathrm{241}}^1$

素因数の和:274

約数の個数: 60

約数和(自身を含む): 47577684

約数和(自身を除く): 27834964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 241, 256, 320, 482, 512, 640, 964, 1024, 1205, 1280, 1928, 2048, 2410, 2560, 3856, 4096, 4820, 5120, 7712, 8192, 9640, 10240, 15424, 16384, 19280, 20480, 30848, 38560, 40960, 61696, 77120, 81920, 123392, 154240, 246784, 308480, 493568, 616960, 987136, 1233920, 1974272, 2467840, 3948544, 4935680, 9871360, 19742720]

約数ペア:

[(1, 19742720), (2, 9871360), (4, 4935680), (5, 3948544), (8, 2467840), (10, 1974272), (16, 1233920), (20, 987136), (32, 616960), (40, 493568), (64, 308480), (80, 246784), (128, 154240), (160, 123392), (241, 81920), (256, 77120), (320, 61696), (482, 40960), (512, 38560), (640, 30848), (964, 20480), (1024, 19280), (1205, 16384), (1280, 15424), (1928, 10240), (2048, 9640), (2410, 8192), (2560, 7712), (3856, 5120), (4096, 4820)]