51211300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 128116800

約数和(自身を除く): 76905500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 149, 175, 298, 350, 491, 596, 700, 745, 982, 1043, 1490, 1964, 2086, 2455, 2980, 3437, 3725, 4172, 4910, 5215, 6874, 7450, 9820, 10430, 12275, 13748, 14900, 17185, 20860, 24550, 26075, 34370, 49100, 52150, 68740, 73159, 85925, 104300, 146318, 171850, 292636, 343700, 365795, 512113, 731590, 1024226, 1463180, 1828975, 2048452, 2560565, 3657950, 5121130, 7315900, 10242260, 12802825, 25605650, 51211300]

約数ペア:

[(1, 51211300), (2, 25605650), (4, 12802825), (5, 10242260), (7, 7315900), (10, 5121130), (14, 3657950), (20, 2560565), (25, 2048452), (28, 1828975), (35, 1463180), (50, 1024226), (70, 731590), (100, 512113), (140, 365795), (149, 343700), (175, 292636), (298, 171850), (350, 146318), (491, 104300), (596, 85925), (700, 73159), (745, 68740), (982, 52150), (1043, 49100), (1490, 34370), (1964, 26075), (2086, 24550), (2455, 20860), (2980, 17185), (3437, 14900), (3725, 13748), (4172, 12275), (4910, 10430), (5215, 9820), (6874, 7450)]