2171988

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:63

約数の個数: 144

約数和(自身を含む): 7378560

約数和(自身を除く): 5206572

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 17, 18, 21, 26, 27, 28, 34, 36, 39, 42, 51, 52, 54, 63, 68, 78, 84, 91, 102, 108, 117, 119, 126, 153, 156, 169, 182, 189, 204, 221, 234, 238, 252, 273, 306, 338, 351, 357, 364, 378, 442, 459, 468, 476, 507, 546, 612, 663, 676, 702, 714, 756, 819, 884, 918, 1014, 1071, 1092, 1183, 1326, 1404, 1428, 1521, 1547, 1638, 1836, 1989, 2028, 2142, 2366, 2457, 2652, 2873, 3042, 3094, 3213, 3276, 3549, 3978, 4284, 4563, 4641, 4732, 4914, 5746, 5967, 6084, 6188, 6426, 7098, 7956, 8619, 9126, 9282, 9828, 10647, 11492, 11934, 12852, 13923, 14196, 17238, 18252, 18564, 20111, 21294, 23868, 25857, 27846, 31941, 34476, 40222, 41769, 42588, 51714, 55692, 60333, 63882, 77571, 80444, 83538, 103428, 120666, 127764, 155142, 167076, 180999, 241332, 310284, 361998, 542997, 723996, 1085994, 2171988]

約数ペア:

[(1, 2171988), (2, 1085994), (3, 723996), (4, 542997), (6, 361998), (7, 310284), (9, 241332), (12, 180999), (13, 167076), (14, 155142), (17, 127764), (18, 120666), (21, 103428), (26, 83538), (27, 80444), (28, 77571), (34, 63882), (36, 60333), (39, 55692), (42, 51714), (51, 42588), (52, 41769), (54, 40222), (63, 34476), (68, 31941), (78, 27846), (84, 25857), (91, 23868), (102, 21294), (108, 20111), (117, 18564), (119, 18252), (126, 17238), (153, 14196), (156, 13923), (169, 12852), (182, 11934), (189, 11492), (204, 10647), (221, 9828), (234, 9282), (238, 9126), (252, 8619), (273, 7956), (306, 7098), (338, 6426), (351, 6188), (357, 6084), (364, 5967), (378, 5746), (442, 4914), (459, 4732), (468, 4641), (476, 4563), (507, 4284), (546, 3978), (612, 3549), (663, 3276), (676, 3213), (702, 3094), (714, 3042), (756, 2873), (819, 2652), (884, 2457), (918, 2366), (1014, 2142), (1071, 2028), (1092, 1989), (1183, 1836), (1326, 1638), (1404, 1547), (1428, 1521)]