28905240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2647}}^1$

素因数の和:2681

約数の個数: 128

約数和(自身を含む): 106767360

約数和(自身を除く): 77862120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2647, 2730, 3640, 5294, 5460, 7941, 10588, 10920, 13235, 15882, 18529, 21176, 26470, 31764, 34411, 37058, 39705, 52940, 55587, 63528, 68822, 74116, 79410, 92645, 103233, 105880, 111174, 137644, 148232, 158820, 172055, 185290, 206466, 222348, 240877, 275288, 277935, 317640, 344110, 370580, 412932, 444696, 481754, 516165, 555870, 688220, 722631, 741160, 825864, 963508, 1032330, 1111740, 1204385, 1376440, 1445262, 1927016, 2064660, 2223480, 2408770, 2890524, 3613155, 4129320, 4817540, 5781048, 7226310, 9635080, 14452620, 28905240]

約数ペア:

[(1, 28905240), (2, 14452620), (3, 9635080), (4, 7226310), (5, 5781048), (6, 4817540), (7, 4129320), (8, 3613155), (10, 2890524), (12, 2408770), (13, 2223480), (14, 2064660), (15, 1927016), (20, 1445262), (21, 1376440), (24, 1204385), (26, 1111740), (28, 1032330), (30, 963508), (35, 825864), (39, 741160), (40, 722631), (42, 688220), (52, 555870), (56, 516165), (60, 481754), (65, 444696), (70, 412932), (78, 370580), (84, 344110), (91, 317640), (104, 277935), (105, 275288), (120, 240877), (130, 222348), (140, 206466), (156, 185290), (168, 172055), (182, 158820), (195, 148232), (210, 137644), (260, 111174), (273, 105880), (280, 103233), (312, 92645), (364, 79410), (390, 74116), (420, 68822), (455, 63528), (520, 55587), (546, 52940), (728, 39705), (780, 37058), (840, 34411), (910, 31764), (1092, 26470), (1365, 21176), (1560, 18529), (1820, 15882), (2184, 13235), (2647, 10920), (2730, 10588), (3640, 7941), (5294, 5460)]