20120971725

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{359}}^1\times {\mathrm{1931}}^1$

素因数の和:2352

約数の個数: 96

約数和(自身を含む): 37947571200

約数和(自身を除く): 17826599475

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 359, 387, 645, 675, 1075, 1077, 1161, 1795, 1931, 1935, 3225, 3231, 5385, 5793, 5805, 8975, 9655, 9675, 9693, 15437, 16155, 17379, 26925, 28965, 29025, 46311, 48275, 48465, 52137, 77185, 80775, 83033, 86895, 138933, 144825, 231555, 242325, 249099, 260685, 385925, 415165, 416799, 434475, 693229, 694665, 747297, 1157775, 1245495, 1303425, 2075825, 2079687, 2083995, 2241891, 3466145, 3473325, 3736485, 6227475, 6239061, 10398435, 10419975, 11209455, 17330725, 18682425, 18717183, 29808847, 31195305, 51992175, 56047275, 89426541, 93585915, 149044235, 155976525, 268279623, 447132705, 467929575, 745221175, 804838869, 1341398115, 2235663525, 4024194345, 6706990575, 20120971725]

約数ペア:

[(1, 20120971725), (3, 6706990575), (5, 4024194345), (9, 2235663525), (15, 1341398115), (25, 804838869), (27, 745221175), (43, 467929575), (45, 447132705), (75, 268279623), (129, 155976525), (135, 149044235), (215, 93585915), (225, 89426541), (359, 56047275), (387, 51992175), (645, 31195305), (675, 29808847), (1075, 18717183), (1077, 18682425), (1161, 17330725), (1795, 11209455), (1931, 10419975), (1935, 10398435), (3225, 6239061), (3231, 6227475), (5385, 3736485), (5793, 3473325), (5805, 3466145), (8975, 2241891), (9655, 2083995), (9675, 2079687), (9693, 2075825), (15437, 1303425), (16155, 1245495), (17379, 1157775), (26925, 747297), (28965, 694665), (29025, 693229), (46311, 434475), (48275, 416799), (48465, 415165), (52137, 385925), (77185, 260685), (80775, 249099), (83033, 242325), (86895, 231555), (138933, 144825)]