21956990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 45785088

約数和(自身を除く): 23828098

約数列:

[1, 2, 5, 10, 11, 22, 31, 47, 55, 62, 94, 110, 137, 155, 235, 274, 310, 341, 470, 517, 682, 685, 1034, 1370, 1457, 1507, 1705, 2585, 2914, 3014, 3410, 4247, 5170, 6439, 7285, 7535, 8494, 12878, 14570, 15070, 16027, 21235, 32054, 32195, 42470, 46717, 64390, 70829, 80135, 93434, 141658, 160270, 199609, 233585, 354145, 399218, 467170, 708290, 998045, 1996090, 2195699, 4391398, 10978495, 21956990]

約数ペア:

[(1, 21956990), (2, 10978495), (5, 4391398), (10, 2195699), (11, 1996090), (22, 998045), (31, 708290), (47, 467170), (55, 399218), (62, 354145), (94, 233585), (110, 199609), (137, 160270), (155, 141658), (235, 93434), (274, 80135), (310, 70829), (341, 64390), (470, 46717), (517, 42470), (682, 32195), (685, 32054), (1034, 21235), (1370, 16027), (1457, 15070), (1507, 14570), (1705, 12878), (2585, 8494), (2914, 7535), (3014, 7285), (3410, 6439), (4247, 5170)]