21070390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 23055818

約数列:

[1, 2, 5, 10, 11, 22, 31, 37, 55, 62, 74, 110, 155, 167, 185, 310, 334, 341, 370, 407, 682, 814, 835, 1147, 1670, 1705, 1837, 2035, 2294, 3410, 3674, 4070, 5177, 5735, 6179, 9185, 10354, 11470, 12358, 12617, 18370, 25234, 25885, 30895, 51770, 56947, 61790, 63085, 67969, 113894, 126170, 135938, 191549, 284735, 339845, 383098, 569470, 679690, 957745, 1915490, 2107039, 4214078, 10535195, 21070390]

約数ペア:

[(1, 21070390), (2, 10535195), (5, 4214078), (10, 2107039), (11, 1915490), (22, 957745), (31, 679690), (37, 569470), (55, 383098), (62, 339845), (74, 284735), (110, 191549), (155, 135938), (167, 126170), (185, 113894), (310, 67969), (334, 63085), (341, 61790), (370, 56947), (407, 51770), (682, 30895), (814, 25885), (835, 25234), (1147, 18370), (1670, 12617), (1705, 12358), (1837, 11470), (2035, 10354), (2294, 9185), (3410, 6179), (3674, 5735), (4070, 5177)]