999003980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{2861}}^1$

素因数の和:2979

約数の個数: 96

約数和(自身を含む): 2423312640

約数和(自身を除く): 1424308660

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 79, 85, 130, 158, 170, 221, 260, 316, 340, 395, 442, 790, 884, 1027, 1105, 1343, 1580, 2054, 2210, 2686, 2861, 4108, 4420, 5135, 5372, 5722, 6715, 10270, 11444, 13430, 14305, 17459, 20540, 26860, 28610, 34918, 37193, 48637, 57220, 69836, 74386, 87295, 97274, 148772, 174590, 185965, 194548, 226019, 243185, 349180, 371930, 452038, 486370, 632281, 743860, 904076, 972740, 1130095, 1264562, 2260190, 2529124, 2938247, 3161405, 3842323, 4520380, 5876494, 6322810, 7684646, 11752988, 12645620, 14691235, 15369292, 19211615, 29382470, 38423230, 49950199, 58764940, 76846460, 99900398, 199800796, 249750995, 499501990, 999003980]

約数ペア:

[(1, 999003980), (2, 499501990), (4, 249750995), (5, 199800796), (10, 99900398), (13, 76846460), (17, 58764940), (20, 49950199), (26, 38423230), (34, 29382470), (52, 19211615), (65, 15369292), (68, 14691235), (79, 12645620), (85, 11752988), (130, 7684646), (158, 6322810), (170, 5876494), (221, 4520380), (260, 3842323), (316, 3161405), (340, 2938247), (395, 2529124), (442, 2260190), (790, 1264562), (884, 1130095), (1027, 972740), (1105, 904076), (1343, 743860), (1580, 632281), (2054, 486370), (2210, 452038), (2686, 371930), (2861, 349180), (4108, 243185), (4420, 226019), (5135, 194548), (5372, 185965), (5722, 174590), (6715, 148772), (10270, 97274), (11444, 87295), (13430, 74386), (14305, 69836), (17459, 57220), (20540, 48637), (26860, 37193), (28610, 34918)]