208842040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:365

約数の個数: 128

約数和(自身を含む): 539965440

約数和(自身を除く): 331123400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 61, 62, 88, 110, 122, 124, 155, 220, 244, 248, 251, 305, 310, 341, 440, 488, 502, 610, 620, 671, 682, 1004, 1220, 1240, 1255, 1342, 1364, 1705, 1891, 2008, 2440, 2510, 2684, 2728, 2761, 3355, 3410, 3782, 5020, 5368, 5522, 6710, 6820, 7564, 7781, 9455, 10040, 11044, 13420, 13640, 13805, 15128, 15311, 15562, 18910, 20801, 22088, 26840, 27610, 30622, 31124, 37820, 38905, 41602, 55220, 61244, 62248, 75640, 76555, 77810, 83204, 85591, 104005, 110440, 122488, 153110, 155620, 166408, 168421, 171182, 208010, 306220, 311240, 336842, 342364, 416020, 427955, 474641, 612440, 673684, 684728, 832040, 842105, 855910, 949282, 1347368, 1684210, 1711820, 1898564, 2373205, 3368420, 3423640, 3797128, 4746410, 5221051, 6736840, 9492820, 10442102, 18985640, 20884204, 26105255, 41768408, 52210510, 104421020, 208842040]

約数ペア:

[(1, 208842040), (2, 104421020), (4, 52210510), (5, 41768408), (8, 26105255), (10, 20884204), (11, 18985640), (20, 10442102), (22, 9492820), (31, 6736840), (40, 5221051), (44, 4746410), (55, 3797128), (61, 3423640), (62, 3368420), (88, 2373205), (110, 1898564), (122, 1711820), (124, 1684210), (155, 1347368), (220, 949282), (244, 855910), (248, 842105), (251, 832040), (305, 684728), (310, 673684), (341, 612440), (440, 474641), (488, 427955), (502, 416020), (610, 342364), (620, 336842), (671, 311240), (682, 306220), (1004, 208010), (1220, 171182), (1240, 168421), (1255, 166408), (1342, 155620), (1364, 153110), (1705, 122488), (1891, 110440), (2008, 104005), (2440, 85591), (2510, 83204), (2684, 77810), (2728, 76555), (2761, 75640), (3355, 62248), (3410, 61244), (3782, 55220), (5020, 41602), (5368, 38905), (5522, 37820), (6710, 31124), (6820, 30622), (7564, 27610), (7781, 26840), (9455, 22088), (10040, 20801), (11044, 18910), (13420, 15562), (13640, 15311), (13805, 15128)]