31212195

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 60555264

約数和(自身を除く): 29343069

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 43, 93, 105, 129, 155, 215, 217, 223, 301, 465, 645, 651, 669, 903, 1085, 1115, 1333, 1505, 1561, 3255, 3345, 3999, 4515, 4683, 6665, 6913, 7805, 9331, 9589, 19995, 20739, 23415, 27993, 28767, 34565, 46655, 47945, 48391, 67123, 103695, 139965, 143835, 145173, 201369, 241955, 297259, 335615, 725865, 891777, 1006845, 1486295, 2080813, 4458885, 6242439, 10404065, 31212195]

約数ペア:

[(1, 31212195), (3, 10404065), (5, 6242439), (7, 4458885), (15, 2080813), (21, 1486295), (31, 1006845), (35, 891777), (43, 725865), (93, 335615), (105, 297259), (129, 241955), (155, 201369), (215, 145173), (217, 143835), (223, 139965), (301, 103695), (465, 67123), (645, 48391), (651, 47945), (669, 46655), (903, 34565), (1085, 28767), (1115, 27993), (1333, 23415), (1505, 20739), (1561, 19995), (3255, 9589), (3345, 9331), (3999, 7805), (4515, 6913), (4683, 6665)]