78705920

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3617}}^1$

素因数の和:3655

約数の個数: 72

約数和(自身を含む): 199670184

約数和(自身を除く): 120964264

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1360, 2176, 2720, 3617, 4352, 5440, 7234, 10880, 14468, 18085, 21760, 28936, 36170, 57872, 61489, 72340, 115744, 122978, 144680, 231488, 245956, 289360, 307445, 462976, 491912, 578720, 614890, 925952, 983824, 1157440, 1229780, 1967648, 2314880, 2459560, 3935296, 4629760, 4919120, 7870592, 9838240, 15741184, 19676480, 39352960, 78705920]

約数ペア:

[(1, 78705920), (2, 39352960), (4, 19676480), (5, 15741184), (8, 9838240), (10, 7870592), (16, 4919120), (17, 4629760), (20, 3935296), (32, 2459560), (34, 2314880), (40, 1967648), (64, 1229780), (68, 1157440), (80, 983824), (85, 925952), (128, 614890), (136, 578720), (160, 491912), (170, 462976), (256, 307445), (272, 289360), (320, 245956), (340, 231488), (544, 144680), (640, 122978), (680, 115744), (1088, 72340), (1280, 61489), (1360, 57872), (2176, 36170), (2720, 28936), (3617, 21760), (4352, 18085), (5440, 14468), (7234, 10880)]