828478720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20879}}^1$

素因数の和:20931

約数の個数: 72

約数和(自身を含む): 2048578560

約数和(自身を除く): 1220099840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 20879, 39680, 41758, 83516, 104395, 167032, 208790, 334064, 417580, 647249, 668128, 835160, 1294498, 1336256, 1670320, 2588996, 2672512, 3236245, 3340640, 5177992, 5345024, 6472490, 6681280, 10355984, 12944980, 13362560, 20711968, 25889960, 26725120, 41423936, 51779920, 82847872, 103559840, 165695744, 207119680, 414239360, 828478720]

約数ペア:

[(1, 828478720), (2, 414239360), (4, 207119680), (5, 165695744), (8, 103559840), (10, 82847872), (16, 51779920), (20, 41423936), (31, 26725120), (32, 25889960), (40, 20711968), (62, 13362560), (64, 12944980), (80, 10355984), (124, 6681280), (128, 6472490), (155, 5345024), (160, 5177992), (248, 3340640), (256, 3236245), (310, 2672512), (320, 2588996), (496, 1670320), (620, 1336256), (640, 1294498), (992, 835160), (1240, 668128), (1280, 647249), (1984, 417580), (2480, 334064), (3968, 208790), (4960, 167032), (7936, 104395), (9920, 83516), (19840, 41758), (20879, 39680)]