21185640

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{1201}}^1$

素因数の和:1232

約数の個数: 144

約数和(自身を含む): 80161380

約数和(自身を除く): 58975740

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1201, 1260, 1470, 1764, 1960, 2205, 2402, 2520, 2940, 3528, 3603, 4410, 4804, 5880, 6005, 7206, 8407, 8820, 9608, 10809, 12010, 14412, 16814, 17640, 18015, 21618, 24020, 25221, 28824, 33628, 36030, 42035, 43236, 48040, 50442, 54045, 58849, 67256, 72060, 75663, 84070, 86472, 100884, 108090, 117698, 126105, 144120, 151326, 168140, 176547, 201768, 216180, 235396, 252210, 294245, 302652, 336280, 353094, 378315, 432360, 470792, 504420, 529641, 588490, 605304, 706188, 756630, 882735, 1008840, 1059282, 1176980, 1412376, 1513260, 1765470, 2118564, 2353960, 2648205, 3026520, 3530940, 4237128, 5296410, 7061880, 10592820, 21185640]

約数ペア:

[(1, 21185640), (2, 10592820), (3, 7061880), (4, 5296410), (5, 4237128), (6, 3530940), (7, 3026520), (8, 2648205), (9, 2353960), (10, 2118564), (12, 1765470), (14, 1513260), (15, 1412376), (18, 1176980), (20, 1059282), (21, 1008840), (24, 882735), (28, 756630), (30, 706188), (35, 605304), (36, 588490), (40, 529641), (42, 504420), (45, 470792), (49, 432360), (56, 378315), (60, 353094), (63, 336280), (70, 302652), (72, 294245), (84, 252210), (90, 235396), (98, 216180), (105, 201768), (120, 176547), (126, 168140), (140, 151326), (147, 144120), (168, 126105), (180, 117698), (196, 108090), (210, 100884), (245, 86472), (252, 84070), (280, 75663), (294, 72060), (315, 67256), (360, 58849), (392, 54045), (420, 50442), (441, 48040), (490, 43236), (504, 42035), (588, 36030), (630, 33628), (735, 28824), (840, 25221), (882, 24020), (980, 21618), (1176, 18015), (1201, 17640), (1260, 16814), (1470, 14412), (1764, 12010), (1960, 10809), (2205, 9608), (2402, 8820), (2520, 8407), (2940, 7206), (3528, 6005), (3603, 5880), (4410, 4804)]