20785968

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1213}}^1$

素因数の和:1251

約数の個数: 120

約数和(自身を含む): 70450848

約数和(自身を除く): 49664880

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 17, 18, 21, 24, 28, 34, 36, 42, 48, 51, 56, 63, 68, 72, 84, 102, 112, 119, 126, 136, 144, 153, 168, 204, 238, 252, 272, 306, 336, 357, 408, 476, 504, 612, 714, 816, 952, 1008, 1071, 1213, 1224, 1428, 1904, 2142, 2426, 2448, 2856, 3639, 4284, 4852, 5712, 7278, 8491, 8568, 9704, 10917, 14556, 16982, 17136, 19408, 20621, 21834, 25473, 29112, 33964, 41242, 43668, 50946, 58224, 61863, 67928, 76419, 82484, 87336, 101892, 123726, 135856, 144347, 152838, 164968, 174672, 185589, 203784, 247452, 288694, 305676, 329936, 371178, 407568, 433041, 494904, 577388, 611352, 742356, 866082, 989808, 1154776, 1222704, 1299123, 1484712, 1732164, 2309552, 2598246, 2969424, 3464328, 5196492, 6928656, 10392984, 20785968]

約数ペア:

[(1, 20785968), (2, 10392984), (3, 6928656), (4, 5196492), (6, 3464328), (7, 2969424), (8, 2598246), (9, 2309552), (12, 1732164), (14, 1484712), (16, 1299123), (17, 1222704), (18, 1154776), (21, 989808), (24, 866082), (28, 742356), (34, 611352), (36, 577388), (42, 494904), (48, 433041), (51, 407568), (56, 371178), (63, 329936), (68, 305676), (72, 288694), (84, 247452), (102, 203784), (112, 185589), (119, 174672), (126, 164968), (136, 152838), (144, 144347), (153, 135856), (168, 123726), (204, 101892), (238, 87336), (252, 82484), (272, 76419), (306, 67928), (336, 61863), (357, 58224), (408, 50946), (476, 43668), (504, 41242), (612, 33964), (714, 29112), (816, 25473), (952, 21834), (1008, 20621), (1071, 19408), (1213, 17136), (1224, 16982), (1428, 14556), (1904, 10917), (2142, 9704), (2426, 8568), (2448, 8491), (2856, 7278), (3639, 5712), (4284, 4852)]