638249300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{4861}}^1$

素因数の和:4989

約数の個数: 72

約数和(自身を含む): 1506617112

約数和(自身を除く): 868367812

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 101, 130, 202, 260, 325, 404, 505, 650, 1010, 1300, 1313, 2020, 2525, 2626, 4861, 5050, 5252, 6565, 9722, 10100, 13130, 19444, 24305, 26260, 32825, 48610, 63193, 65650, 97220, 121525, 126386, 131300, 243050, 252772, 315965, 486100, 490961, 631930, 981922, 1263860, 1579825, 1963844, 2454805, 3159650, 4909610, 6319300, 6382493, 9819220, 12274025, 12764986, 24548050, 25529972, 31912465, 49096100, 63824930, 127649860, 159562325, 319124650, 638249300]

約数ペア:

[(1, 638249300), (2, 319124650), (4, 159562325), (5, 127649860), (10, 63824930), (13, 49096100), (20, 31912465), (25, 25529972), (26, 24548050), (50, 12764986), (52, 12274025), (65, 9819220), (100, 6382493), (101, 6319300), (130, 4909610), (202, 3159650), (260, 2454805), (325, 1963844), (404, 1579825), (505, 1263860), (650, 981922), (1010, 631930), (1300, 490961), (1313, 486100), (2020, 315965), (2525, 252772), (2626, 243050), (4861, 131300), (5050, 126386), (5252, 121525), (6565, 97220), (9722, 65650), (10100, 63193), (13130, 48610), (19444, 32825), (24305, 26260)]