978990100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{3463}}^1$

素因数の和:3745

約数の個数: 72

約数和(自身を含む): 2327226048

約数和(自身を除く): 1348235948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 257, 275, 514, 550, 1028, 1100, 1285, 2570, 2827, 3463, 5140, 5654, 6425, 6926, 11308, 12850, 13852, 14135, 17315, 25700, 28270, 34630, 38093, 56540, 69260, 70675, 76186, 86575, 141350, 152372, 173150, 190465, 282700, 346300, 380930, 761860, 889991, 952325, 1779982, 1904650, 3559964, 3809300, 4449955, 8899910, 9789901, 17799820, 19579802, 22249775, 39159604, 44499550, 48949505, 88999100, 97899010, 195798020, 244747525, 489495050, 978990100]

約数ペア:

[(1, 978990100), (2, 489495050), (4, 244747525), (5, 195798020), (10, 97899010), (11, 88999100), (20, 48949505), (22, 44499550), (25, 39159604), (44, 22249775), (50, 19579802), (55, 17799820), (100, 9789901), (110, 8899910), (220, 4449955), (257, 3809300), (275, 3559964), (514, 1904650), (550, 1779982), (1028, 952325), (1100, 889991), (1285, 761860), (2570, 380930), (2827, 346300), (3463, 282700), (5140, 190465), (5654, 173150), (6425, 152372), (6926, 141350), (11308, 86575), (12850, 76186), (13852, 70675), (14135, 69260), (17315, 56540), (25700, 38093), (28270, 34630)]