21408030

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:311

約数の個数: 128

約数和(自身を含む): 66908160

約数和(自身を除く): 45500130

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 47, 54, 63, 70, 90, 94, 105, 126, 135, 141, 189, 210, 235, 241, 270, 282, 315, 329, 378, 423, 470, 482, 630, 658, 705, 723, 846, 945, 987, 1205, 1269, 1410, 1446, 1645, 1687, 1890, 1974, 2115, 2169, 2410, 2538, 2961, 3290, 3374, 3615, 4230, 4338, 4935, 5061, 5922, 6345, 6507, 7230, 8435, 8883, 9870, 10122, 10845, 11327, 12690, 13014, 14805, 15183, 16870, 17766, 21690, 22654, 25305, 29610, 30366, 32535, 33981, 44415, 45549, 50610, 56635, 65070, 67962, 75915, 79289, 88830, 91098, 101943, 113270, 151830, 158578, 169905, 203886, 227745, 237867, 305829, 339810, 396445, 455490, 475734, 509715, 611658, 713601, 792890, 1019430, 1189335, 1427202, 1529145, 2140803, 2378670, 3058290, 3568005, 4281606, 7136010, 10704015, 21408030]

約数ペア:

[(1, 21408030), (2, 10704015), (3, 7136010), (5, 4281606), (6, 3568005), (7, 3058290), (9, 2378670), (10, 2140803), (14, 1529145), (15, 1427202), (18, 1189335), (21, 1019430), (27, 792890), (30, 713601), (35, 611658), (42, 509715), (45, 475734), (47, 455490), (54, 396445), (63, 339810), (70, 305829), (90, 237867), (94, 227745), (105, 203886), (126, 169905), (135, 158578), (141, 151830), (189, 113270), (210, 101943), (235, 91098), (241, 88830), (270, 79289), (282, 75915), (315, 67962), (329, 65070), (378, 56635), (423, 50610), (470, 45549), (482, 44415), (630, 33981), (658, 32535), (705, 30366), (723, 29610), (846, 25305), (945, 22654), (987, 21690), (1205, 17766), (1269, 16870), (1410, 15183), (1446, 14805), (1645, 13014), (1687, 12690), (1890, 11327), (1974, 10845), (2115, 10122), (2169, 9870), (2410, 8883), (2538, 8435), (2961, 7230), (3290, 6507), (3374, 6345), (3615, 5922), (4230, 5061), (4338, 4935)]