21673960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:287

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 41363480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 124, 140, 154, 155, 217, 220, 227, 248, 280, 308, 310, 341, 385, 434, 440, 454, 616, 620, 682, 770, 868, 908, 1085, 1135, 1240, 1364, 1540, 1589, 1705, 1736, 1816, 2170, 2270, 2387, 2497, 2728, 3080, 3178, 3410, 4340, 4540, 4774, 4994, 6356, 6820, 7037, 7945, 8680, 9080, 9548, 9988, 11935, 12485, 12712, 13640, 14074, 15890, 17479, 19096, 19976, 23870, 24970, 28148, 31780, 34958, 35185, 47740, 49259, 49940, 56296, 63560, 69916, 70370, 77407, 87395, 95480, 98518, 99880, 139832, 140740, 154814, 174790, 197036, 246295, 281480, 309628, 349580, 387035, 394072, 492590, 541849, 619256, 699160, 774070, 985180, 1083698, 1548140, 1970360, 2167396, 2709245, 3096280, 4334792, 5418490, 10836980, 21673960]

約数ペア:

[(1, 21673960), (2, 10836980), (4, 5418490), (5, 4334792), (7, 3096280), (8, 2709245), (10, 2167396), (11, 1970360), (14, 1548140), (20, 1083698), (22, 985180), (28, 774070), (31, 699160), (35, 619256), (40, 541849), (44, 492590), (55, 394072), (56, 387035), (62, 349580), (70, 309628), (77, 281480), (88, 246295), (110, 197036), (124, 174790), (140, 154814), (154, 140740), (155, 139832), (217, 99880), (220, 98518), (227, 95480), (248, 87395), (280, 77407), (308, 70370), (310, 69916), (341, 63560), (385, 56296), (434, 49940), (440, 49259), (454, 47740), (616, 35185), (620, 34958), (682, 31780), (770, 28148), (868, 24970), (908, 23870), (1085, 19976), (1135, 19096), (1240, 17479), (1364, 15890), (1540, 14074), (1589, 13640), (1705, 12712), (1736, 12485), (1816, 11935), (2170, 9988), (2270, 9548), (2387, 9080), (2497, 8680), (2728, 7945), (3080, 7037), (3178, 6820), (3410, 6356), (4340, 4994), (4540, 4774)]