20459880

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:400

約数の個数: 192

約数和(自身を含む): 79522560

約数和(自身を除く): 59062680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 23, 24, 28, 30, 35, 36, 40, 42, 45, 46, 56, 60, 63, 69, 70, 72, 84, 90, 92, 105, 115, 120, 126, 138, 140, 161, 168, 180, 184, 207, 210, 230, 252, 276, 280, 315, 322, 345, 353, 360, 414, 420, 460, 483, 504, 552, 630, 644, 690, 706, 805, 828, 840, 920, 966, 1035, 1059, 1260, 1288, 1380, 1412, 1449, 1610, 1656, 1765, 1932, 2070, 2118, 2415, 2471, 2520, 2760, 2824, 2898, 3177, 3220, 3530, 3864, 4140, 4236, 4830, 4942, 5295, 5796, 6354, 6440, 7060, 7245, 7413, 8119, 8280, 8472, 9660, 9884, 10590, 11592, 12355, 12708, 14120, 14490, 14826, 15885, 16238, 19320, 19768, 21180, 22239, 24357, 24710, 25416, 28980, 29652, 31770, 32476, 37065, 40595, 42360, 44478, 48714, 49420, 56833, 57960, 59304, 63540, 64952, 73071, 74130, 81190, 88956, 97428, 98840, 111195, 113666, 121785, 127080, 146142, 148260, 162380, 170499, 177912, 194856, 222390, 227332, 243570, 284165, 292284, 296520, 324760, 340998, 365355, 444780, 454664, 487140, 511497, 568330, 584568, 681996, 730710, 852495, 889560, 974280, 1022994, 1136660, 1363992, 1461420, 1704990, 2045988, 2273320, 2557485, 2922840, 3409980, 4091976, 5114970, 6819960, 10229940, 20459880]

約数ペア:

[(1, 20459880), (2, 10229940), (3, 6819960), (4, 5114970), (5, 4091976), (6, 3409980), (7, 2922840), (8, 2557485), (9, 2273320), (10, 2045988), (12, 1704990), (14, 1461420), (15, 1363992), (18, 1136660), (20, 1022994), (21, 974280), (23, 889560), (24, 852495), (28, 730710), (30, 681996), (35, 584568), (36, 568330), (40, 511497), (42, 487140), (45, 454664), (46, 444780), (56, 365355), (60, 340998), (63, 324760), (69, 296520), (70, 292284), (72, 284165), (84, 243570), (90, 227332), (92, 222390), (105, 194856), (115, 177912), (120, 170499), (126, 162380), (138, 148260), (140, 146142), (161, 127080), (168, 121785), (180, 113666), (184, 111195), (207, 98840), (210, 97428), (230, 88956), (252, 81190), (276, 74130), (280, 73071), (315, 64952), (322, 63540), (345, 59304), (353, 57960), (360, 56833), (414, 49420), (420, 48714), (460, 44478), (483, 42360), (504, 40595), (552, 37065), (630, 32476), (644, 31770), (690, 29652), (706, 28980), (805, 25416), (828, 24710), (840, 24357), (920, 22239), (966, 21180), (1035, 19768), (1059, 19320), (1260, 16238), (1288, 15885), (1380, 14826), (1412, 14490), (1449, 14120), (1610, 12708), (1656, 12355), (1765, 11592), (1932, 10590), (2070, 9884), (2118, 9660), (2415, 8472), (2471, 8280), (2520, 8119), (2760, 7413), (2824, 7245), (2898, 7060), (3177, 6440), (3220, 6354), (3530, 5796), (3864, 5295), (4140, 4942), (4236, 4830)]