21684390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{47}}^1$

素因数の和:103

約数の個数: 128

約数和(自身を含む): 65802240

約数和(自身を除く): 44117850

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 47, 65, 70, 78, 91, 94, 105, 130, 141, 169, 182, 195, 210, 235, 273, 282, 329, 338, 390, 455, 470, 507, 546, 611, 658, 705, 845, 910, 987, 1014, 1183, 1222, 1365, 1410, 1645, 1690, 1833, 1974, 2197, 2366, 2535, 2730, 3055, 3290, 3549, 3666, 4277, 4394, 4935, 5070, 5915, 6110, 6591, 7098, 7943, 8554, 9165, 9870, 10985, 11830, 12831, 13182, 15379, 15886, 17745, 18330, 21385, 21970, 23829, 25662, 30758, 32955, 35490, 39715, 42770, 46137, 47658, 55601, 64155, 65910, 76895, 79430, 92274, 103259, 111202, 119145, 128310, 153790, 166803, 206518, 230685, 238290, 278005, 309777, 333606, 461370, 516295, 556010, 619554, 722813, 834015, 1032590, 1445626, 1548885, 1668030, 2168439, 3097770, 3614065, 4336878, 7228130, 10842195, 21684390]

約数ペア:

[(1, 21684390), (2, 10842195), (3, 7228130), (5, 4336878), (6, 3614065), (7, 3097770), (10, 2168439), (13, 1668030), (14, 1548885), (15, 1445626), (21, 1032590), (26, 834015), (30, 722813), (35, 619554), (39, 556010), (42, 516295), (47, 461370), (65, 333606), (70, 309777), (78, 278005), (91, 238290), (94, 230685), (105, 206518), (130, 166803), (141, 153790), (169, 128310), (182, 119145), (195, 111202), (210, 103259), (235, 92274), (273, 79430), (282, 76895), (329, 65910), (338, 64155), (390, 55601), (455, 47658), (470, 46137), (507, 42770), (546, 39715), (611, 35490), (658, 32955), (705, 30758), (845, 25662), (910, 23829), (987, 21970), (1014, 21385), (1183, 18330), (1222, 17745), (1365, 15886), (1410, 15379), (1645, 13182), (1690, 12831), (1833, 11830), (1974, 10985), (2197, 9870), (2366, 9165), (2535, 8554), (2730, 7943), (3055, 7098), (3290, 6591), (3549, 6110), (3666, 5915), (4277, 5070), (4394, 4935)]