21196812

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 64350720

約数和(自身を除く): 43153908

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 47, 49, 52, 59, 78, 84, 91, 94, 98, 118, 141, 147, 156, 177, 182, 188, 196, 236, 273, 282, 294, 329, 354, 364, 413, 546, 564, 588, 611, 637, 658, 708, 767, 826, 987, 1092, 1222, 1239, 1274, 1316, 1534, 1652, 1833, 1911, 1974, 2301, 2303, 2444, 2478, 2548, 2773, 2891, 3068, 3666, 3822, 3948, 4277, 4602, 4606, 4956, 5369, 5546, 5782, 6909, 7332, 7644, 8319, 8554, 8673, 9204, 9212, 10738, 11092, 11564, 12831, 13818, 16107, 16638, 17108, 17346, 19411, 21476, 25662, 27636, 29939, 32214, 33276, 34692, 36049, 37583, 38822, 51324, 58233, 59878, 64428, 72098, 75166, 77644, 89817, 108147, 112749, 116466, 119756, 135877, 144196, 150332, 179634, 216294, 225498, 232932, 252343, 271754, 359268, 407631, 432588, 450996, 504686, 543508, 757029, 815262, 1009372, 1514058, 1630524, 1766401, 3028116, 3532802, 5299203, 7065604, 10598406, 21196812]

約数ペア:

[(1, 21196812), (2, 10598406), (3, 7065604), (4, 5299203), (6, 3532802), (7, 3028116), (12, 1766401), (13, 1630524), (14, 1514058), (21, 1009372), (26, 815262), (28, 757029), (39, 543508), (42, 504686), (47, 450996), (49, 432588), (52, 407631), (59, 359268), (78, 271754), (84, 252343), (91, 232932), (94, 225498), (98, 216294), (118, 179634), (141, 150332), (147, 144196), (156, 135877), (177, 119756), (182, 116466), (188, 112749), (196, 108147), (236, 89817), (273, 77644), (282, 75166), (294, 72098), (329, 64428), (354, 59878), (364, 58233), (413, 51324), (546, 38822), (564, 37583), (588, 36049), (611, 34692), (637, 33276), (658, 32214), (708, 29939), (767, 27636), (826, 25662), (987, 21476), (1092, 19411), (1222, 17346), (1239, 17108), (1274, 16638), (1316, 16107), (1534, 13818), (1652, 12831), (1833, 11564), (1911, 11092), (1974, 10738), (2301, 9212), (2303, 9204), (2444, 8673), (2478, 8554), (2548, 8319), (2773, 7644), (2891, 7332), (3068, 6909), (3666, 5782), (3822, 5546), (3948, 5369), (4277, 4956), (4602, 4606)]