647297840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{2707}}^1$

素因数の和:2795

約数の個数: 120

約数和(自身を含む): 1780033392

約数和(自身を除く): 1132735552

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 61, 70, 80, 98, 112, 122, 140, 196, 244, 245, 280, 305, 392, 427, 488, 490, 560, 610, 784, 854, 976, 980, 1220, 1708, 1960, 2135, 2440, 2707, 2989, 3416, 3920, 4270, 4880, 5414, 5978, 6832, 8540, 10828, 11956, 13535, 14945, 17080, 18949, 21656, 23912, 27070, 29890, 34160, 37898, 43312, 47824, 54140, 59780, 75796, 94745, 108280, 119560, 132643, 151592, 165127, 189490, 216560, 239120, 265286, 303184, 330254, 378980, 530572, 660508, 663215, 757960, 825635, 1061144, 1155889, 1321016, 1326430, 1515920, 1651270, 2122288, 2311778, 2642032, 2652860, 3302540, 4623556, 5305720, 5779445, 6605080, 8091223, 9247112, 10611440, 11558890, 13210160, 16182446, 18494224, 23117780, 32364892, 40456115, 46235560, 64729784, 80912230, 92471120, 129459568, 161824460, 323648920, 647297840]

約数ペア:

[(1, 647297840), (2, 323648920), (4, 161824460), (5, 129459568), (7, 92471120), (8, 80912230), (10, 64729784), (14, 46235560), (16, 40456115), (20, 32364892), (28, 23117780), (35, 18494224), (40, 16182446), (49, 13210160), (56, 11558890), (61, 10611440), (70, 9247112), (80, 8091223), (98, 6605080), (112, 5779445), (122, 5305720), (140, 4623556), (196, 3302540), (244, 2652860), (245, 2642032), (280, 2311778), (305, 2122288), (392, 1651270), (427, 1515920), (488, 1326430), (490, 1321016), (560, 1155889), (610, 1061144), (784, 825635), (854, 757960), (976, 663215), (980, 660508), (1220, 530572), (1708, 378980), (1960, 330254), (2135, 303184), (2440, 265286), (2707, 239120), (2989, 216560), (3416, 189490), (3920, 165127), (4270, 151592), (4880, 132643), (5414, 119560), (5978, 108280), (6832, 94745), (8540, 75796), (10828, 59780), (11956, 54140), (13535, 47824), (14945, 43312), (17080, 37898), (18949, 34160), (21656, 29890), (23912, 27070)]