21253910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 22084330

約数列:

[1, 2, 5, 10, 17, 31, 34, 37, 62, 74, 85, 109, 155, 170, 185, 218, 310, 370, 527, 545, 629, 1054, 1090, 1147, 1258, 1853, 2294, 2635, 3145, 3379, 3706, 4033, 5270, 5735, 6290, 6758, 8066, 9265, 11470, 16895, 18530, 19499, 20165, 33790, 38998, 40330, 57443, 68561, 97495, 114886, 125023, 137122, 194990, 250046, 287215, 342805, 574430, 625115, 685610, 1250230, 2125391, 4250782, 10626955, 21253910]

約数ペア:

[(1, 21253910), (2, 10626955), (5, 4250782), (10, 2125391), (17, 1250230), (31, 685610), (34, 625115), (37, 574430), (62, 342805), (74, 287215), (85, 250046), (109, 194990), (155, 137122), (170, 125023), (185, 114886), (218, 97495), (310, 68561), (370, 57443), (527, 40330), (545, 38998), (629, 33790), (1054, 20165), (1090, 19499), (1147, 18530), (1258, 16895), (1853, 11470), (2294, 9265), (2635, 8066), (3145, 6758), (3379, 6290), (3706, 5735), (4033, 5270)]