18128628

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:306

約数の個数: 108

約数和(自身を含む): 54774720

約数和(自身を除く): 36646092

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 49, 63, 84, 86, 98, 126, 129, 147, 172, 196, 239, 252, 258, 294, 301, 387, 441, 478, 516, 588, 602, 717, 774, 882, 903, 956, 1204, 1434, 1548, 1673, 1764, 1806, 2107, 2151, 2709, 2868, 3346, 3612, 4214, 4302, 5019, 5418, 6321, 6692, 8428, 8604, 10038, 10277, 10836, 11711, 12642, 15057, 18963, 20076, 20554, 23422, 25284, 30114, 30831, 35133, 37926, 41108, 46844, 60228, 61662, 70266, 71939, 75852, 92493, 105399, 123324, 140532, 143878, 184986, 210798, 215817, 287756, 369972, 421596, 431634, 503573, 647451, 863268, 1007146, 1294902, 1510719, 2014292, 2589804, 3021438, 4532157, 6042876, 9064314, 18128628]

約数ペア:

[(1, 18128628), (2, 9064314), (3, 6042876), (4, 4532157), (6, 3021438), (7, 2589804), (9, 2014292), (12, 1510719), (14, 1294902), (18, 1007146), (21, 863268), (28, 647451), (36, 503573), (42, 431634), (43, 421596), (49, 369972), (63, 287756), (84, 215817), (86, 210798), (98, 184986), (126, 143878), (129, 140532), (147, 123324), (172, 105399), (196, 92493), (239, 75852), (252, 71939), (258, 70266), (294, 61662), (301, 60228), (387, 46844), (441, 41108), (478, 37926), (516, 35133), (588, 30831), (602, 30114), (717, 25284), (774, 23422), (882, 20554), (903, 20076), (956, 18963), (1204, 15057), (1434, 12642), (1548, 11711), (1673, 10836), (1764, 10277), (1806, 10038), (2107, 8604), (2151, 8428), (2709, 6692), (2868, 6321), (3346, 5418), (3612, 5019), (4214, 4302)]