20781072

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{653}}^1$

素因数の和:697

約数の個数: 120

約数和(自身を含む): 66417624

約数和(自身を除く): 45636552

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 17, 18, 24, 26, 34, 36, 39, 48, 51, 52, 68, 72, 78, 102, 104, 117, 136, 144, 153, 156, 204, 208, 221, 234, 272, 306, 312, 408, 442, 468, 612, 624, 653, 663, 816, 884, 936, 1224, 1306, 1326, 1768, 1872, 1959, 1989, 2448, 2612, 2652, 3536, 3918, 3978, 5224, 5304, 5877, 7836, 7956, 8489, 10448, 10608, 11101, 11754, 15672, 15912, 16978, 22202, 23508, 25467, 31344, 31824, 33303, 33956, 44404, 47016, 50934, 66606, 67912, 76401, 88808, 94032, 99909, 101868, 133212, 135824, 144313, 152802, 177616, 199818, 203736, 266424, 288626, 305604, 399636, 407472, 432939, 532848, 577252, 611208, 799272, 865878, 1154504, 1222416, 1298817, 1598544, 1731756, 2309008, 2597634, 3463512, 5195268, 6927024, 10390536, 20781072]

約数ペア:

[(1, 20781072), (2, 10390536), (3, 6927024), (4, 5195268), (6, 3463512), (8, 2597634), (9, 2309008), (12, 1731756), (13, 1598544), (16, 1298817), (17, 1222416), (18, 1154504), (24, 865878), (26, 799272), (34, 611208), (36, 577252), (39, 532848), (48, 432939), (51, 407472), (52, 399636), (68, 305604), (72, 288626), (78, 266424), (102, 203736), (104, 199818), (117, 177616), (136, 152802), (144, 144313), (153, 135824), (156, 133212), (204, 101868), (208, 99909), (221, 94032), (234, 88808), (272, 76401), (306, 67912), (312, 66606), (408, 50934), (442, 47016), (468, 44404), (612, 33956), (624, 33303), (653, 31824), (663, 31344), (816, 25467), (884, 23508), (936, 22202), (1224, 16978), (1306, 15912), (1326, 15672), (1768, 11754), (1872, 11101), (1959, 10608), (1989, 10448), (2448, 8489), (2612, 7956), (2652, 7836), (3536, 5877), (3918, 5304), (3978, 5224)]