19819520

素因数分解:

$2^{10}\times 5^1\times 7^2\times {\mathrm{79}}^1$

素因数の和:118

約数の個数: 132

約数和(自身を含む): 56005920

約数和(自身を除く): 36186400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 79, 80, 98, 112, 128, 140, 158, 160, 196, 224, 245, 256, 280, 316, 320, 392, 395, 448, 490, 512, 553, 560, 632, 640, 784, 790, 896, 980, 1024, 1106, 1120, 1264, 1280, 1568, 1580, 1792, 1960, 2212, 2240, 2528, 2560, 2765, 3136, 3160, 3584, 3871, 3920, 4424, 4480, 5056, 5120, 5530, 6272, 6320, 7168, 7742, 7840, 8848, 8960, 10112, 11060, 12544, 12640, 15484, 15680, 17696, 17920, 19355, 20224, 22120, 25088, 25280, 30968, 31360, 35392, 35840, 38710, 40448, 44240, 50176, 50560, 61936, 62720, 70784, 77420, 80896, 88480, 101120, 123872, 125440, 141568, 154840, 176960, 202240, 247744, 250880, 283136, 309680, 353920, 404480, 495488, 566272, 619360, 707840, 990976, 1238720, 1415680, 1981952, 2477440, 2831360, 3963904, 4954880, 9909760, 19819520]

約数ペア:

[(1, 19819520), (2, 9909760), (4, 4954880), (5, 3963904), (7, 2831360), (8, 2477440), (10, 1981952), (14, 1415680), (16, 1238720), (20, 990976), (28, 707840), (32, 619360), (35, 566272), (40, 495488), (49, 404480), (56, 353920), (64, 309680), (70, 283136), (79, 250880), (80, 247744), (98, 202240), (112, 176960), (128, 154840), (140, 141568), (158, 125440), (160, 123872), (196, 101120), (224, 88480), (245, 80896), (256, 77420), (280, 70784), (316, 62720), (320, 61936), (392, 50560), (395, 50176), (448, 44240), (490, 40448), (512, 38710), (553, 35840), (560, 35392), (632, 31360), (640, 30968), (784, 25280), (790, 25088), (896, 22120), (980, 20224), (1024, 19355), (1106, 17920), (1120, 17696), (1264, 15680), (1280, 15484), (1568, 12640), (1580, 12544), (1792, 11060), (1960, 10112), (2212, 8960), (2240, 8848), (2528, 7840), (2560, 7742), (2765, 7168), (3136, 6320), (3160, 6272), (3584, 5530), (3871, 5120), (3920, 5056), (4424, 4480)]